Visual and adjustable laryngeal mask

Abstract

The visual and adjustable laryngeal mask comprises a laryngeal mask body and a breather pipe, the laryngeal mask body is connected to the front end of the breather pipe and defines a cavity with one side open, an inflatable mask bag is arranged on the edge of the laryngeal mask body, a vent hole is formed in the cavity of the laryngeal mask body and communicated with the far end of the breather pipe, and the inflatable mask bag is arranged in the cavity of the laryngeal mask body. The laryngeal mask further comprises a camera shooting unit and a guide tube, the guide tube extends from the near end to the far end and penetrates through the laryngeal mask body to reach the interior of the cavity, the guide tube is closed at the far end, the camera shooting unit comprises a camera, a supporting tube core and a control unit, and the control unit is used for controlling the camera to bend leftwards and rightwards so as to adjust the shooting angle of the camera. The guide tube is used for guiding the camera to be inserted into the cavity of the laryngeal mask body from the near end; wherein the control unit is provided with a light source, the laryngeal mask further comprises an optical fiber extending into the cavity of the laryngeal mask body from the near end, and the optical fiber is used for guiding light of the light source into the cavity of the laryngeal mask body.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a visible and adjustable laryngeal mask for surgical anesthesia. Background Art

[0002] A laryngeal mask is an airway appliance composed of an inflatable leaf-shaped resin mask and a connecting tube. It can be blindly inserted through the mouth or inserted into the throat under direct vision through the mouth. When the airbag part of the laryngeal mask is inflated, the inflated laryngeal mask can surround and seal the epiglottis and glottis, forming a low-pressure sealing mask around the larynx. The connecting tube of the laryngeal mask leads to the outside of the mouth and can be connected to a ventilator, allowing for spontaneous breathing or positive pressure ventilation.

[0003] The laryngeal mask is suitable for maintaining airway control during short-term routine anesthesia of fasting patients, and is also suitable for airway management with known or unknown difficulties. It can also be used to establish a clean airway during the resuscitation of deeply comatose patients at risk of airway obstruction who may require artificial ventilation. Ventilation using a laryngeal mask is more reliable, easy to learn, well tolerated by patients, and has a low incidence of postoperative complications. Therefore, it is widely used.

[0004] However, early laryngeal masks did not have a visible function. During the placement and use of the laryngeal mask, other tools, such as rigid endoscopes or flexible endoscopes, were needed to observe and determine whether the placement position of the laryngeal mask was accurate to ensure the safety and effectiveness during the placement and use of the laryngeal mask. Subsequently, some intubating laryngeal masks with wired video functions were gradually developed during use. These intubating laryngeal masks achieved the visible function by permanently fixing the imaging element to the laryngeal mask. For example, the invention patent with the application number CN201810124111.1 provides an improved visible laryngeal mask. This laryngeal mask adds a visible imaging function on the basis of the original ordinary laryngeal mask by longitudinally extending a camera cavity on the inner wall of the ventilation tube and placing a camera device in the camera cavity, enabling it to guide the placement of the laryngeal mask and allowing for real-time observation, monitoring, and adjustment after placement, thereby improving the convenience of doctors using the laryngeal mask and increasing the success rate of laryngeal mask placement. However, the camera device of the above visible laryngeal mask is installed on the side wall of one side of the inner wall of the fixed seat. Since the camera device of this visible laryngeal mask is fixed to the laryngeal mask, it is a disposable camera device, but the price of the camera device is relatively expensive, resulting in patients having to bear higher surgical costs.

[0005] In addition, in existing visible laryngeal masks, the angle and position of the camera are not directly facing the front end of the laryngeal mask. Therefore, the images of the glottis and esophageal orifice observed are not in the front view, resulting in limited vision. During monitoring, the glottis and esophageal orifice cannot be well observed, and it is impossible to determine whether the head end of the laryngeal mask has entered the esophageal orifice. Moreover, as the operation progresses, the position of the laryngeal mask may shift, causing the camera to be misaligned with the glottis, and the situation of airway stenosis in the patient cannot be detected in a timely manner. Since the camera's field of view is fixed, the position of the laryngeal mask cannot be adjusted in a timely manner.

[0006] In addition, during the insertion process of the visible laryngeal mask, the light in the patient's oral cavity is relatively dim, which will also affect the clarity of the images captured by the camera, and even the position of the glottis cannot be observed, affecting the accuracy of laryngeal mask insertion and prolonging the laryngeal mask insertion time. Summary of the Invention

[0007] In view of the technical problems raised in the background art, the present invention provides a visible and adjustable laryngeal mask in order to at least partially solve at least one of the above technical problems.

[0008] To solve the above technical problems, the present invention provides the following technical solutions:

[0009] The present invention relates to a visible and adjustable laryngeal mask, including a laryngeal mask body and a ventilation tube. The laryngeal mask body is connected to the front end of the ventilation tube and defines a cavity that is open on one side. An inflatable cuff is provided at the edge of the laryngeal mask body. A ventilation hole is opened in the cavity of the laryngeal mask body, and the ventilation hole is communicated with the distal end of the ventilation tube. A step with an arc-shaped inner surface is provided in the cavity of the laryngeal mask body outside the ventilation hole. It is characterized in that the laryngeal mask further includes a camera unit and a protective sleeve. Among them,

[0010] The camera unit includes a camera, a support tube core, and a control unit. The camera is arranged at the front end of the support tube core, and the control unit is arranged at the rear end of the support tube core for controlling the front camera to bend upward or downward to adjust the angle of the camera;

[0011] A first through hole is further provided on one side of the ventilation hole of the laryngeal mask body;

[0012] The protective sleeve extends from the proximal end to the distal end and passes through the first through hole and extends into the cavity of the laryngeal mask body. A closed viewing window is provided at the distal end of the protective sleeve, and the proximal end is open; the camera and the support tube core of the camera unit penetrate into the protective sleeve, so that the camera can capture the front image through the closed viewing window at the front end of the protective sleeve;

[0013] A second through hole is further provided on the other side of the ventilation hole of the laryngeal mask body;

[0014] The laryngeal mask further includes an optical fiber for light guiding extending from the proximal end to the distal end. The optical fiber provides an illumination source through an optical fiber light source at the proximal end, and the distal end of the optical fiber penetrates into the cavity of the laryngeal mask body through a second through hole.

[0015] A support plate is provided at the proximal end of the tracheal tube. This support plate is used to fix the control unit of the imaging unit. The support plate is provided with a third through hole for the insertion of the imaging unit. The opening at the proximal end of the protective sleeve communicates with this third through hole.

[0016] The optical fiber light source is arranged in the control unit of the imaging unit. The support plate is provided with a fourth through hole. The proximal end of the optical fiber is fixed in the fourth through hole. When the imaging unit is inserted into the protective sleeve and the control unit is fixed on the support plate, the optical fiber light source is aligned with the fourth through hole.

[0017] In a further preferred embodiment, the protective sleeve is elastic, and the lengths of the camera and the support tube core of the imaging unit are greater than or equal to the length of the protective sleeve.

[0018] In a further preferred embodiment, the part of the protective sleeve outside the cavity of the laryngeal mask body is arranged closely against the side wall of the tracheal tube. The side wall of the tracheal tube is provided with a first groove part, and at least a part of the protective sleeve is embedded in the first groove part.

[0019] In a further preferred embodiment, the part of the optical fiber outside the cavity of the laryngeal mask body is arranged closely against the side wall of the tracheal tube. The side wall of the tracheal tube is provided with a second groove part, and at least a part of the optical fiber is embedded in the second groove part.

[0020] In a further preferred embodiment, the optical fiber is arranged in an optical fiber sleeve, and the optical fiber sleeve is adhesively fixed to the second groove part with glue.

[0021] In a further preferred embodiment, the closed window is made of a transparent material, and an anti-dirty coating is provided on its outer surface. The material of this anti-dirty coating is selected from at least one of fluorocarbon resin and silicone resin.

[0022] In a further preferred embodiment, the support tube core includes a flexible section with a bendable front end and a plastic section at the rear end. The front end of the flexible section is connected to the camera, and the rear end of the plastic section is connected to the control unit.

[0023] The LED cold light source provided on one side of the camera and the optical fiber provided on the other side of the visible adjustable laryngeal mask protected by the present utility model can greatly improve the brightness inside the cavity of the laryngeal mask body. The camera can always obtain clear images of the patient's oral cavity and glottis during the insertion process and during the surgical process after successful insertion. And by setting a camera with an adjustable angle, the alignment accuracy and insertion success rate of the laryngeal mask are greatly improved, intraoperative displacement can be detected in a timely manner and assisted in adjusting the alignment, the changes of the glottis during the operation can be monitored in real time, sudden problems can be detected and solved in a timely manner to realize the visualization of the supraglottic ventilation tool, and the airway management level can be improved; tracheal intubation can be guided under visualization to improve the success efficiency of intubation, and secretion aspiration can be guided under visualization to improve the airway ventilation condition. Description of the Drawings

[0024] Figure 1 The front view of the visible adjustable laryngeal mask according to an embodiment of the present utility model;

[0025] Figure 2 The left view of the visible adjustable laryngeal mask according to an embodiment of the present utility model;

[0026] Figure 3 The right view of the visible adjustable laryngeal mask according to an embodiment of the present utility model;

[0027] Figure 4 is Figure 1 the sectional view taken along line A-A in

[0028] Figure 5 The structural schematic diagram of the visible adjustable laryngeal mask with the camera unit removed according to an embodiment of the present utility model;

[0029] Figure 6 The top view of the visible adjustable laryngeal mask with the camera unit removed according to an embodiment of the present utility model;

[0030] Figure 7 is Figure 6 the sectional view taken along line B-B in

[0031] Figure 8 The structural schematic diagram of the camera unit in the visible adjustable laryngeal mask according to an embodiment of the present utility model;

[0032] Figure 9 is Figure 8 the sectional view taken along line C-C in

[0033] In the figure:

[0034] 1 - Laryngeal mask body, 10 - laryngeal mask, 11 - cavity, 12 - mask bladder, 121 - inflation tube, 13 - ventilation hole, 14 - first through hole, 15 - step, 151 - arc-shaped inner surface, 16 - second through hole, 2 - ventilation tube, 21 - first groove portion, 22 - second groove portion, 23 - support plate, 231 - clamping plate, 232 - opening, 233 - third through hole, 234 - fourth through hole, 3 - imaging unit, 31 - camera, 32 - support tube core, 321 - flexible section, 321A - snake bone joint, 32A - control wire, 322 - plastic section, 33 - control unit, 331 - support housing, 332 - support bottom plate, 3321 - through hole, 3322 - clamping block, 333 - knob, 334 - fiber optic light source, 335 - turntable, 4 - protective sleeve, 41 - closed viewing window, 42 - opening, 5 - optical fiber, 6 - cleaning unit, 61 - cleaning nozzle, 62 - pipeline. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Next, the features and exemplary embodiments of various aspects of the present invention will be described in detail. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by showing examples of the present invention.

[0037] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0038] In the present utility model, the "front end" and "distal end" refer to the end of the laryngeal mask inserted into the patient's oral cavity, and the "rear end" and "proximal end" refer to the end close to the doctor's grip or operation.

[0039] As Figures 1 to 8 shown, the laryngeal mask 10 protected by the present utility model includes a laryngeal mask body 1 and a ventilation tube 2. The laryngeal mask body 1 is approximately leaf-shaped. The laryngeal mask body 1 defines an open cavity 11 upwards. A closed cuff 12 is provided at the edge of the laryngeal mask body 1. The cuff 12 is connected to an inflation tube 121. The proximal end of the inflation tube 121 is connected to an inflation device (not shown in the figure) for inflating or deflating the cuff 12. The above-mentioned cuff 12 is used to cover the larynx so that the cavity 11 of the laryngeal mask body 1 communicates with the human airway and forms a negative pressure in the cavity 11. The ventilation tube 2 includes a distal end that can be inserted into the patient's oral cavity and a proximal end located outside the oral cavity that can be connected to a ventilator. The distal end of the ventilation tube 2 is connected to the laryngeal mask body 1. The ventilation tube 2 is usually pre-bent at a certain angle to adapt to the structure in the patient's oral cavity. The ventilation tube 2 includes a vertical section at the proximal end and a horizontal section close to the laryngeal mask body 1 at the distal end. There is an arc transition between the vertical section and the horizontal section. Of course, the bending angle can also be set as required. A ventilation hole 13 is opened in the cavity 11 of the laryngeal mask body 1. The distal end of the ventilation tube 2 communicates with the ventilation hole 13 for mechanically actively ventilating the patient through a ventilator.

[0040] The laryngeal mask protected by the present utility model has a visual function, and thus further includes a camera unit 3. As Figures 7 to 8 shown, the camera unit 3 includes a camera 31 at the distal end, a support tube core 32 in the middle, and a control unit 33 at the proximal end. The camera 31 is provided at the front end of the support tube core 32, and the control unit 33 is provided at the rear end of the support tube core 32. A first through hole 14 is also provided on one side of the ventilation hole 13 of the laryngeal mask body 1. As Figures 2 to 4As shown, the first through-hole 14 is provided on the right side of the ventilation hole 13. Of course, it can also be provided on the left side of the ventilation hole 13. The first through-hole 14 can be formed during the injection molding of the laryngeal mask body 1, that is, considering the position of the first through-hole 14 when designing the mold, or it can be formed after the injection molding of the laryngeal mask body 1. The method of forming the first through-hole 14 can be cutting or drilling.

[0041] Further, the laryngeal mask 10 is also provided with a protective sleeve 4. The protective sleeve 4 extends from the proximal end to the distal end and passes through the first through-hole 14 on the laryngeal mask body 1 at the distal end and extends into the cavity 11 of the laryngeal mask body 1. The distal end of the protective sleeve 4 extending into the first through-hole 14 is provided with a closed window 41. The closed window 41 is made of a transparent material, and the outer surface of the closed window 41 is treated to prevent dirt and adhesion. Preferably, an anti-dirt coating is provided on the outer surface of the closed window 41.

[0042] An opening 42 is provided at the proximal end of the protective sleeve 4. The camera 31 and the support tube core 32 of the imaging unit 3 can pass through the opening 42 at the proximal end into the protective sleeve 4. At this time, the protective sleeve 4 serves as a channel for the camera 31 to penetrate into the cavity 11 of the laryngeal mask body 1. The camera 31 at the front end of the imaging unit 3 can extend to the distal end of the protective sleeve 4 and closely adhere to the closed window 41. Thus, the camera 31 can capture the image in front of it through the closed window 41 at the front end of the protective sleeve 4. After the operation is completed and the laryngeal mask 10 is withdrawn from the human oral cavity, the camera 31 and the support tube core 32 of the imaging unit 3 can also be withdrawn from the protective sleeve 4. After disinfecting the imaging unit 3, it can be used in other laryngeal masks. Therefore, the imaging unit 3 can be reused, greatly reducing the use cost of the visible laryngeal mask.

[0043] Preferably, the protective sleeve 4 is made of PVC or TPU material.

[0044] Further preferably, the part of the protective sleeve 4 outside the cavity 11 of the laryngeal mask body 1 is fixedly arranged closely against the side wall of the ventilation tube 2. Even more preferably, as Figure 4 shown, a first groove portion 21 is provided along the axial direction of the side wall of the ventilation tube 2. The first groove portion 21 can be continuous or discontinuous. At least a part of the protective sleeve 4 is embedded in the first groove portion 21. Preferably, the fixing method can be to bond the protective sleeve 4 in the first groove portion 21 with glue.

[0045] Since the light in the oral cavity is weak during the process of inserting the laryngeal mask into the human oral cavity, it is difficult to observe a clear image of its front end through the camera 31. In this embodiment, a light source is provided on the outer periphery of the camera 31. Preferably, the light source is a plurality of LED cold light sources.

[0046] Further, during the operation, a tracheal intubation tube, a sputum suction tube, etc. may be inserted into the laryngeal mask airway tube 2, and such tubes need to be aligned with or pass through the glottis. To achieve rapid intubation during the operation, as Figure 5 shown, a step 15 with an arc-shaped inner surface 151 is provided in the cavity 11 of the laryngeal mask body 1 outside the laryngeal mask ventilation hole 13. The step 15 has a bending angle along the axial direction when viewed from the side, and this bending angle enables the inserted tracheal intubation tube or sputum suction tube to bend along the arc-shaped inner surface 151 and be quickly guided to align with the glottis, avoiding repeated angle adjustment.

[0047] As Figure 4 and Figure 5 shown, the camera 31 is located on the right side of the ventilation hole 13. Part of the light of the LED cold light source around the camera 31 will be blocked by the step 15, resulting in darker light on the left side of the ventilation hole 13 and affecting the camera 31 to capture the image on the left side of the axis of the ventilation hole 13.

[0048] In addition, in the above-mentioned embodiment, the lens of the camera 31 and the LED cold light source are basically in the same plane, and problems such as halos, light spots, and white pictures will occur to the camera 31.

[0049] To solve the above problems, in a further preferred embodiment, another light source is added on the left side of the ventilation hole 13 as shown in Figure 4 . Preferably, this light source is the optical fiber 5. Specifically, a second through hole 16 is provided in the laryngeal mask body 1. Preferably, the second through hole 16 is located on the other side of the ventilation hole 13, that is, Figure 1 shown, the second through hole 16 is located on the left side of the ventilation hole 13. The optical fiber 5 extends from the proximal end to the distal end of the laryngeal mask 10. The optical fiber 5 provides illumination through the optical fiber light source 334 at the proximal end. The distal end of the optical fiber 5 penetrates into the cavity 11 of the laryngeal mask body 1 from the second through hole 16. Furthermore, the optical fiber 5 can transmit the light of the optical fiber light source 334 into the cavity 11 of the laryngeal mask body 1, improving the brightness at the front end of the camera 31, especially the brightness on the left side of the ventilation hole 13, and at the same time, problems such as halos, light spots, and white pictures of the camera 31 can be avoided. The setting method of the optical fiber light source 334 will be introduced in detail in the following description of the control unit 33.

[0050] Further preferably, the part of the optical fiber 5 outside the cavity 11 of the laryngeal mask body 1 is tightly attached to the side wall of the airway tube 2. Preferably, the optical fiber 5 is bonded to the side wall of the airway tube 2 with glue. Since the outer surface of the optical fiber 5 is relatively smooth, the optical fiber 5 is not easily bonded to the airway tube 2. Further preferably, the optical fiber 5 is arranged in an optical fiber sleeve, which is convenient for the installation and fixation of the optical fiber 5, and at the same time, it can also prevent the light of the light source from diffusing outside the optical fiber 5 and improve the light brightness transmitted into the cavity 11 of the laryngeal mask body 1. Further preferably, the optical fiber sleeve is made of PVC or TPU material.

[0051] Even more preferably, asFigure 4 As shown, a second groove portion 22 extending axially is provided on the outer sidewall of the ventilation tube 2. The second groove portion 22 can be continuous or discontinuous. The optical fiber sleeve is embedded in the second groove portion 22 to increase the bonding area between the optical fiber sleeve and the outer sidewall of the ventilation tube 2, improve the bonding firmness between the optical fiber sleeve and the sidewall of the ventilation tube 2, and at the same time, also make the optical fiber sleeve and the ventilation tube 2 more tend to form an integral body, which is beneficial to the insertion of the laryngeal mask.

[0052] Furthermore, a support plate 23 is provided at the proximal end of the ventilation tube 2, and the control unit 33 is detachably fixed on the support plate 23. Preferably, the fixing method is snap connection.

[0053] Specifically, as Figures 4 to 8 shown, two snap connection plates 231 are provided on the side of the support plate 23 facing the proximal end, and through holes 232 are provided on the snap connection plates 231; the control unit 33 includes a support housing 331 and a support bottom plate 332 located at the bottom of the support housing 331. Two through holes 3321 penetrating the support bottom plate 332 are provided at the bottom of the support bottom plate 332, and a snap block 3322 is correspondingly provided for each through hole 3321. The snap block 3322 extends out from the sidewall of the support bottom plate 332, and the snap block 3322 can be elastically reset. The snap connection plate 231 can extend into the through hole 3321 of the support bottom plate 332, and the through hole 232 on the snap connection plate 231 can be snap-connected with the snap block 3322, thereby fixing the control unit 33 on the support plate 23. When it is necessary to remove the control unit 33, by pressing the snap blocks 3322 on both sides, the snap blocks 3322 can be released from the through hole 232, and then the control unit 33 and the imaging unit 3 can be detached from the laryngeal mask 10.

[0054] Further preferably, a third through hole 233 is provided on the support plate 23, and the opening 42 at the proximal end of the protective sleeve 4 is communicated with the third through hole 233. The front camera 31 and the support tube core 32 of the imaging unit 3 can be inserted into the third through hole 233 and inserted into the protective sleeve 4 through the opening 42. Preferably, the lengths of the support tube core 32 and the camera 31 are designed such that when inserted into the protective sleeve 4, the front end of the camera 31 just tightly fits against the closed window 41, and the snap block 3322 just snap-fits with the through hole 232 of the snap connection plate 231.

[0055] Preferably, the sum of the lengths of the camera 31 and the support tube core 32 is equal to the length of the protective sleeve 4.

[0056] Further preferably, the protective sleeve 4 has a certain elasticity, and the sum of the lengths of the camera 31 and the support tube core 32 is slightly longer than the length of the protective sleeve 4, such as 0.5 - 1.5 mm longer, which can ensure that the lens in front of the camera 31 tightly fits against the closed window 41 of the protective sleeve 4.

[0057] Further preferably, the fiber optic light source 334 is disposed on the control unit 33. Specifically, the fiber optic light source 334 is disposed in the through hole of the support base plate 332 and is electrically connected to a circuit board (not shown in the figure) in the support housing 331 of the control unit 33 to control the switch and brightness of the fiber optic light source 334. A fourth through hole 234 is provided on the support plate 23. When the control unit 33 is fixed on the support plate 23, the fourth through hole 234 is aligned with the fiber optic light source 334. Then, the light of the fiber optic light source 334 is transmitted through the fourth through hole 234 to the optical fiber 5 and then enters the cavity 11 of the laryngeal mask body 1.

[0058] As Figures 7 to 8 shown, the support core 32 includes a flexible section 321 located at the distal end and connected to the camera 31 and a plastic section 322 connected to the control unit. The plastic section 322 can also be bent as needed. Preferably, the flexible section 321 is a snake bone lumen, and the snake bone lumen is composed of a plurality of snake bone joints 321A that can be bent relative to each other and are connected to each other. The distal end of the snake bone joint 321A is connected to the camera 31. Two control wires 32A are also provided at intervals inside the support core 32. The front ends of the control wires 32A are fixed to the distal ends of the snake bone joints 321A. Preferably, the front ends of the control wires 32A are fixed to the inner walls of the distal ends of the snake bone joints 321A by welding, riveting or other means.

[0059] The control wire 32A is preferably made of steel wire. Of course, it is not limited to steel wire and can be other thin wires made of rigid materials.

[0060] The control unit 33 is further provided with a knob 333 and a turntable 335 connected to the knob 333. The knob 333 is outside the support housing 331 of the control unit 33, and the turntable 335 is disposed inside the support housing 331. The knob 333 and the turntable 335 can rotate synchronously. The rear ends of the control wires 32A extend through the inner cavity of the plastic section 322 and are connected to the turntable 335 in the control unit 33. Preferably, the two control wires 32A are fixed opposite to each other in the circumferential direction with respect to the turntable 335. By rotating the knob 333, the control wires 32A can be pulled in two directions respectively, so that the flexible section 321 bends in the up and down directions, driving the camera 31 to bend up or down to adjust the angle at which the camera 31 captures an image.

[0061] In order to transmit the image collected by the camera 31 to the display unit outside the patient's oral cavity, a cable is also provided in the inner cavity of the support core 32. The front end of the cable is connected to the camera 31, and the rear end passes through the control unit 33 and can be connected to the display unit (not shown) through an external cable.

[0062] In a further preferred embodiment, in order to ensure that the front end of the camera remains clean during the use of the laryngeal mask, as Figures 4 to 6As shown in the figure, the visible and adjustable laryngeal mask of the present utility model further includes a camera cleaning unit 6. The cleaning unit includes a cleaning nozzle 61 and a pipeline 62. Among them, the cleaning nozzle 61 is arranged on one side of the closed window 41 at the front end of the protective sleeve 4 and can spray liquid towards the closed window 41 to clean sputum, blood, etc. attached to the closed window. The front end of the pipeline 62 is connected to the cleaning nozzle 61, and the rear end passes through the first through hole 14 of the laryngeal mask body 1 and is connected to a liquid supply device (not shown).

[0063] Preferably, as Figure 6 shown, the closed window 41 at the front end of the protective sleeve 4 is an end cap, and the end cap is fixedly connected or integrally formed with the protective sleeve 4. The cleaning nozzle 61 is integrally formed or fixedly connected with the end cap. The front end of the cleaning nozzle 61 extends beyond the front end of the end cap. Further preferably, the cleaning nozzle 61 is provided with a plurality of nozzle holes facing the closed window 41 so as to spray the cleaning liquid onto the front surface of the closed window 41.

[0064] Further preferably, an anti-dirty coating is provided on the outer surface of the closed window 41 facing the cavity 11 of the laryngeal mask body 1. The material of the anti-dirty coating is selected from at least one of fluorocarbon resin, silicone resin, and nanomaterials to prevent sputum, blood, etc. from adhering to the closed window 41 and affecting the clarity of the image captured by the camera 31.

[0065] The LED cold light source provided on one side of the camera of the visible and adjustable laryngeal mask of the present utility model and the optical fiber provided on the other side can greatly improve the brightness inside the cavity of the laryngeal mask body. The camera can always obtain clear images of the patient's oral cavity and glottis during the insertion process and during the surgical process after successful insertion. And by setting a camera with an adjustable angle, the alignment accuracy and insertion success rate of the laryngeal mask are greatly improved, intraoperative displacement can be detected in time and assisted in adjusting the alignment, the changes of the glottis during the operation can be monitored in real time, sudden problems can be discovered and solved in time to realize the visualization of the supraglottic ventilation tool and improve the airway management level; guiding tracheal intubation under visualization can improve the success efficiency of intubation, and guiding secretion suction under visualization can improve the airway ventilation condition.

[0066] It should be clear that the present utility model is not limited to the specific structures and processes described above and shown in the figures. For the sake of brevity, the detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present utility model is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions after understanding the spirit of the present utility model, or change the order between the steps.

[0067] It should also be noted that in the exemplary embodiments mentioned in the present utility model, some methods or systems are described based on a series of steps or devices. However, the present utility model is not limited to the order of the above steps, that is, the steps can be executed in the order mentioned in the embodiments, or different from the order in the embodiments, or several steps can be executed simultaneously.

[0068] As mentioned above, the above is only the specific implementation manner of the present utility model. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, modules, and units can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein. It should be understood that the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present utility model.

Claims

1. A visually adjustable laryngeal mask, comprising a laryngeal mask body and a ventilating tube, wherein the laryngeal mask body is connected to the front end of the ventilating tube and defines a cavity with one side open, an inflatable mask bag is provided at the edge of the laryngeal mask body, a ventilating hole is provided in the cavity of the laryngeal mask body, the ventilating hole is communicated with the distal end of the ventilating tube, a step with an arc-shaped inner surface is provided in the cavity of the laryngeal mask body outside the ventilating hole, characterized in that: The laryngeal mask also includes a camera unit and a protective sleeve, wherein: The camera unit includes a camera, a support tube core and a control unit, wherein the camera is arranged at the front end of the support tube core, and the control unit is arranged at the rear end of the support tube core, and is used to control the front end camera to bend upward or downward to adjust the angle of the camera; A first through hole is also provided on one side of the vent hole of the laryngeal mask body; The protective sleeve extends from the proximal end to the distal end and extends into the cavity of the laryngeal mask body through the first through hole. The distal end of the protective sleeve is provided with a closed window and the proximal end is open. The camera and the support tube core of the camera unit penetrate into the protective sleeve, whereby the camera can capture the front image through the closed window at the front end of the protective sleeve. The laryngeal mask body is also provided with a second through hole located on the other side of the vent hole; The laryngeal mask further comprises a light-guiding optical fiber extending from a proximal end to a distal end, wherein the optical fiber provides an illumination source at the proximal end through an optical fiber light source, and the distal end of the optical fiber penetrates into the cavity of the laryngeal mask body through the second through hole; A support plate is provided at the proximal end of the ventilation tube, the support plate is used to fix the control unit of the camera unit, the support plate is provided with a third through hole for inserting the camera unit, and the opening at the proximal end of the protective sleeve is communicated with the third through hole; The fiber optic light source is arranged in the control unit of the camera unit, the support plate is provided with a fourth through hole, the proximal end of the optical fiber is fixed in the fourth through hole, and when the camera unit is inserted into the protective sleeve and the control unit is fixed on the support plate, the fiber optic light source is aligned with the fourth through hole.

2. The visually adjustable laryngeal mask according to claim 1, characterized in that: The protective sleeve is elastic, and the length of the camera head and the supporting tube core of the camera unit is greater than or equal to the length of the protective sleeve.

3. The visually adjustable laryngeal mask according to claim 1, characterized in that: The portion of the protective sleeve located outside the cavity of the laryngeal mask body is arranged closely against the side wall of the ventilation tube, the side wall of the ventilation tube is provided with a first groove portion, and at least a portion of the protective sleeve is embedded in the first groove portion.

4. The visually adjustable laryngeal mask according to claim 1, characterized in that: The portion of the optical fiber located outside the cavity of the laryngeal mask body is arranged close to the side wall of the ventilation tube, the side wall of the ventilation tube is provided with a second groove portion, and at least a portion of the optical fiber is embedded in the second groove portion.

5. The visually adjustable laryngeal mask according to claim 4, characterized in that: The optical fiber is arranged in an optical fiber sleeve, and the optical fiber sleeve is bonded and fixed to the second groove portion by glue.

6. The visually adjustable laryngeal mask according to any one of claims 1 to 5, characterized in that: The closed window is made of transparent material, and an anti-fouling coating is arranged on its outer surface. The material of the anti-fouling coating is selected from at least one of fluorocarbon resin and silicone resin.

7. The visually adjustable laryngeal mask according to any one of claims 1 to 5, characterized in that: The support tube core comprises a bendable flexible section at the front end and a plastic section at the rear end, the front end of the flexible section is connected to a camera, and the rear end of the plastic section is connected to a control unit.

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