CN116999664A - Laryngeal mask and video laryngeal mask - Google Patents

Abstract

The embodiment of the application provides a laryngeal mask and a video laryngeal mask, wherein the laryngeal mask comprises a guide pipe, a sealing seat, a connecting seat, a light guide piece and a gastric tube, wherein an air guide channel and a video cavity channel which is used for being matched with a video tube in a plugging manner are formed in the guide pipe, and the air guide channel and the video cavity channel are not communicated with each other; the sealing seat is connected to the distal end of the catheter and is provided with a gastric tube cavity; the connecting seat is arranged at the proximal end of the catheter and is provided with a breathing channel, a plug opening, a light guide opening and a stomach tube connecting opening, and the air guide channel is communicated with the breathing channel and the space in the sealing seat; the light guide piece is arranged in the air guide channel, and the proximal end of the light guide piece is hermetically penetrated in the light guide opening; the stomach tube extends to its distal end from the proximal end of air duct, and the distal end of stomach tube wears out from the distal end of pipe to with stomach tube cavity way intercommunication, the proximal end of stomach tube passes the stomach tube connector with sealing. The embodiment of the application can effectively control the external dimension of the laryngeal mask, thereby improving the imbeddability and the comfort of the laryngeal mask.

Description

Laryngeal mask and video laryngeal mask

Technical Field

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

Background

The laryngeal mask is used as a supraglottic ventilation device, belongs to an artificial respiratory tract, and is widely applied to clinic due to the advantages of simple operation, high success rate, small damage and the like since the laryngeal mask was invented in 1983. The laryngeal mask is an artificial airway device interposed between the mask and the tracheal cannula that allows the patient to breathe spontaneously or to perform positive airway pressure.

The laryngeal mask without visual function is generally inserted into the patient in a blind way, and operators can only insert the laryngeal mask according to hand feeling and experience because the details of the throat part cannot be peeped and the laryngeal mask cannot be peeped during operation. Blind insertion is likely to result in inaccurate laryngeal mask placement and inaccurate placement may lead to a subsequent series of problems, such as inability to effectively isolate the airway and the digestive tract, incomplete laryngeal mask sealing, air leakage, patient flatulence, regurgitation, and even aspiration. When one or more of the problems described above occur, the operator has to readjust the angle of the laryngeal mask within the patient or repeatedly insert the mask a number of times, which may extend the operating time and delay the rescue of critically ill patients. And the oral mucus of the patient is possibly increased by multiple trial insertion, so that the operation difficulty is increased.

In order to ensure the accuracy of the laryngeal mask placement position, operators often check by various indirect means, such as observation of chest relief, lung compliance, auscultation for leakage sounds, observation of neck bulge, monitoring of PetCO2 (end-tidal carbon dioxide partial pressure), opening observation, etc., but in actual practice, various indirect checking means play an important role, but because of inherent limitations of the indirect means themselves, there is a risk of erroneous judgment, and thus, if necessary, direct use of visual soft microscopy is required. There are problems associated with the direct use of a soft visual mirror. Firstly, the visual soft lens is a reusable instrument and directly contacts with internal tissues of a patient, so that strict sterilization, such as soaking sterilization, needs relatively long time and more procedures for strict sterilization, medical staff has to use spare instruments during sterilization, the use cost is objectively increased, and even so, certain cross infection risks exist; secondly, the cost of the visual soft lens is relatively high, and the visual soft lens is not a spare instrument which can be acquired at will, such as the visual soft lens which is possibly lacking when some emergency airway treatments are carried out or in part of basic medical institutions; again, the soft visual scope is mainly applied to inspection after laryngeal mask insertion or to guiding an endotracheal tube through the laryngeal mask into the glottis, rather than achieving full visualization during laryngeal mask insertion, and therefore it is difficult to effectively reduce repeated insertion of the laryngeal mask.

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

However, as the function of the laryngeal mask increases, the number of channels in the laryngeal mask increases, which results in larger and larger laryngeal mask conduits and connecting seats, and limited patient opening and upper airway space, and even smaller patient opening or narrow mouth and throat, which may seriously affect patient comfort, or make it difficult to accurately insert the laryngeal mask into the patient.

Disclosure of Invention

Accordingly, the present application is directed to a laryngeal mask that solves the problems of laryngeal mask placement and comfort.

In order to achieve the above object, a first aspect of the embodiments of the present application provides a laryngeal mask, including a catheter, a sealing seat, a connecting seat, a light guide member, and a gastric tube, wherein an air guide channel and a visual cavity for being in plug-and-pull fit with the visual tube are formed in the catheter, and the air guide channel and the visual cavity are not communicated with each other; the sealing seat is connected to the distal end of the catheter, and is provided with a gastric tube cavity; the connecting seat is arranged at the proximal end of the catheter and is provided with a breathing channel, a plug opening, a light guide opening and a stomach tube connecting opening, and the air guide channel is communicated with the breathing channel and the space in the sealing seat; the light guide piece is arranged in the air guide channel, and the proximal end of the light guide piece is hermetically penetrated in the light guide opening; the stomach tube extends from the proximal end of the air guide channel to the distal end of the air guide channel, the distal end of the stomach tube penetrates out of the distal end of the catheter and is communicated with the stomach tube cavity, and the proximal end of the stomach tube passes through the stomach tube connecting port in a sealing mode.

Further, the connecting seat comprises a connecting platform and a plug-in column connected with the connecting platform, the plug-in column is inserted into the catheter, the plug-in port, the light guide port and the stomach tube connecting port all penetrate through the connecting platform, a respiratory cavity and an assembly channel are formed in the plug-in column, the respiratory cavity forms a part of the respiratory channel, and the light guide piece, the stomach tube and the video cavity are all penetrated in the assembly channel.

Further, the laryngeal mask includes a filler member disposed in a gap between the side wall of the mounting channel and the side walls of the light guide, the gastric tube and the viewing channel.

Further, the plug-in column comprises a peripheral column casing and a partition wall arranged in the peripheral column casing, the partition wall divides the inner space of the peripheral column casing into the respiratory cavity and the assembly channel, and a gap is formed in the side wall of the peripheral column casing; the guide tube comprises a guide sleeve and a tube body arranged in the guide sleeve, the tube wall of the tube body is connected with the inner wall of the guide sleeve, the space in the tube body is the video cavity, the joint of the tube body and the inner wall of the guide sleeve is clamped into the gap, and the guide sleeve is wrapped on the circumferential outer surface of the peripheral column casing.

Further, the respiratory tract and the fitting channel are arranged in the width direction of the catheter, and the gastric tube and the tube body are arranged in the thickness direction in the fitting channel; the number of the filling pieces is at least two, and the filling pieces are arranged in the space at two opposite sides of the central connecting line of the gastric tube and the tube body.

Further, two of the fillers constrain the gastric tube therebetween.

Further, the filler is provided with a clamping groove which restrains the light guide member therein.

Further, the filling piece comprises a first filling piece and a second filling piece which are oppositely arranged; the partition wall is located be provided with first joint key on the lateral wall of assembly passageway one side, be formed with first joint groove on the first filling piece, first joint groove card is gone into first joint key is in order to right first filling piece is fixed a position.

Further, a second clamping key is arranged on the side wall of the assembly channel, a second clamping groove is formed in the second filling piece, and the second clamping groove is clamped into the second clamping key to position the second filling piece.

Further, a positioning ring is arranged on the inner wall of the catheter, and the stomach tube is arranged in the positioning ring in a penetrating mode.

Further, the connecting seat comprises a sealing cover, a notch communicated with the assembly channel is formed in the connecting platform, the sealing cover seals the notch, and the light guide port and the stomach tube connecting port penetrate through the sealing cover.

A second aspect of an embodiment of the present application provides a video laryngeal mask comprising a viewing device and a laryngeal mask according to any one of the preceding claims, the viewing device being connected to the connecting base;

the video device comprises a control part and a video tube, wherein the control part is removably connected with the connecting seat, the video tube is inserted into the video cavity channel in a pluggable manner through the plug opening, the far end of the video tube stretches into the space in the sealing seat, and the far end of the video tube can be bent and reset under the control of the control part.

According to the laryngeal mask disclosed by the embodiment of the application, the air guide channel and the video cavity channel are formed in the catheter, and the space in the air guide channel is fully utilized by arranging the light guide piece and the stomach tube in the air guide channel, so that the laryngeal mask is compact in structure; and, the distal end of stomach tube and the interior stomach tube cavity way intercommunication of seal seat, that is to say, the distal end of stomach tube need not pass through the outside of seal seat, when realizing visual function, does not increase the overall dimension of laryngeal mask as far as possible, reduces the requirement to patient's opening degree, and then has improved the embedability and the comfort level of laryngeal mask.

Drawings

FIG. 1 is a schematic view of the laryngeal mask in accordance with an embodiment of the present application;

FIG. 2 is an exploded view of the laryngeal mask shown in FIG. 1;

FIG. 3 is a schematic view of a catheter according to an embodiment of the present application;

FIG. 4 is an exploded view of a connector base according to an embodiment of the present application;

FIG. 5 is a schematic cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 6 is a schematic cross-sectional view of the plug post taken along the direction A-A in FIG. 1;

FIG. 7 is a schematic cross-sectional view of the catheter taken along the direction A-A in FIG. 1;

FIG. 8 is a schematic cross-sectional view of the filler element taken along the direction A-A in FIG. 1;

FIG. 9 is a partial cross-sectional view of the laryngeal mask shown in FIG. 1;

FIG. 10 is a cross-sectional view of the laryngeal mask shown in FIG. 1;

fig. 11 is an enlarged view at B in fig. 10.

Description of the reference numerals

A catheter 10; an air guide passage 10a; a guide sleeve 11; a tube body 12; a video channel 12a; a positioning ring 13; a connection base 20; a breathing passage 20a; a connection platform 21; a plug port 21a; a notch 21b; a plug post 22; the respiratory tract 22a; a fitting passage 22b; a peripheral cylinder 221; a slit 221a; a second engagement key 221b; a partition wall 222; a first engagement key 222a; a seal cover 23; a light guide port 23a; a gastric tube connection port 23b; a breathing circuit fitting 24; a seal holder 30; a gastric tube passageway 30a; an airbag seat 31; an air bag 32; a light guide 40; a gastric tube 50; a filler 60; a card slot 60a; a first filler 61; a first engagement groove 61a; a second filler 62; a second engagement groove 62a; a hose 70; blind end 70a.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments of the present application and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as unduly limiting the present application.

In the description of the present application, the "left", "right", "front", "rear" orientation or positional relationship is based on the normal use state of the laryngeal mask, as shown in fig. 5, wherein the "width" is the left and right direction of fig. 5, and the "thickness" is the front and rear direction of fig. 5. "proximal" refers to a direction toward the operator and "distal" refers to a direction away from the operator. It is to be understood that such directional terms are merely used to facilitate the description of the application and to simplify the description, and are not intended to indicate or imply that the devices or elements so referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus are not to be construed as limiting the application.

An embodiment of the present application provides a laryngeal mask, referring to figures 1 to 11, comprising a tube 10, a sealing seat 30, a connector 20, a light guide 40 and a gastric tube 50.

Referring to fig. 3 and 7, an air guide channel 10a and a viewing channel 12a for being inserted into and pulled out of the viewing tube are formed in the catheter 10, and the air guide channel 10a and the viewing channel 12a are not communicated with each other. The air guide passage 10a and the viewing channel 12a each extend along the length of the catheter 10.

Because the visual cavity channel 12a and the air guide channel 10a are not communicated with each other, air flow cannot enter the visual cavity channel 12a in the process of being guided into the sealing seat 30 through the air guide channel 10a, so that the air guide channel 10a has better air tightness, and the air flow can be efficiently guided into the lung of a patient.

Referring to fig. 1 and 2, the seal holder 30 is attached to the distal end of the catheter 10, it being understood that the seal holder 30 may be of unitary construction, such as a soft body construction using silicone molding; the seal holder 30 may be in the form of an airbag holder 31 and an airbag 32. In the present embodiment, the seal housing 30 includes an airbag housing 31 and an airbag 32.

Referring to fig. 1 and 4, the connection base 20 is disposed at the proximal end of the catheter 10, the connection base 20 is provided with a breathing channel 20a, a plug 21a, a light guide opening 23a and a gastric tube connection opening 23b, the sealing base 30 is provided with a gastric tube cavity 30a, the proximal end of the gastric tube 50 passes through the gastric tube connection opening 23b in a sealing manner, the distal end of the gastric tube 50 passes out of the distal end of the catheter 10 and is communicated with the gastric tube cavity 30a, the air guide channel 10a is communicated with the breathing channel 20a and the space in the sealing base 30, the proximal end of the light guide 40 passes through the light guide opening 23a in a sealing manner, and the light guide 40 is disposed in the air guide channel 10a.

The light guide member 40 may be a plastic optical fiber, or may be a structure formed by combining an electric light emitter with an electric wire, such as an LED lamp. In particular, when the light guide 40 is a plastic optical fiber, the distal end of the plastic optical fiber may be exposed in the sealing seat 30.

According to the laryngeal mask disclosed by the embodiment of the application, based on the limitation of the opening degree of a patient and the consideration of comfort, the light guide piece 40 and the stomach tube 50 are arranged in the air guide channel 10a, so that the space in the air guide channel 10a is fully utilized, the structure of the laryngeal mask is more compact, and the outline dimension of the laryngeal mask is further reduced; moreover, the stomach tube 50 extends from the proximal end of the air guide channel 10a to the distal end thereof, and the distal end of the stomach tube 50 penetrates out of the distal end of the catheter 10 and is communicated with the stomach tube cavity 30a in the sealing seat 30, that is, the distal end of the stomach tube 50 does not need to pass through the outside of the sealing seat 30, so that the external dimension of the laryngeal mask is further reduced, the requirement on the opening degree of a patient is further reduced, and the imbeddability and the comfort of the laryngeal mask are improved.

Another embodiment of the present application provides a video laryngeal mask comprising a viewing device coupled to a connector 20, as well as the laryngeal mask of any of the previous embodiments.

The viewing device includes a control part removably connected to the connection base 20, and a viewing tube (not shown) inserted in the viewing channel 12a through the insertion opening 21a so that its distal end extends into the space in the seal base 30, and the distal end of the viewing tube can be bent and reset under the control of the control part. After the laryngeal mask is inserted into the patient, the control part can control the distal end of the visual tube to bend upwards to exclude tissue shielding such as the larynx, the epiglottis and the like, so that the distal end of the visual tube can obtain a better view of the glottis and the peripheral area.

The gastric tube passageway 30a penetrates the distal end portion of the seal holder 30.

The distal end of the gastric tube 50 may be directly or indirectly connected to the opening at the proximal end of the gastric tube 30a, or may extend into the gastric tube 30a to be connected to the opening at the distal end of the gastric tube 30 a.

The gastric tube channel 30a may be an integral structure formed by directly molding the sealing seat 30, or may be a structure in which a gastric connection tube having the gastric tube channel 30a is provided on the balloon seat 31. In this embodiment, the gastric tube passageway 30a is an integral structure formed by directly molding the seal holder 30.

To facilitate connection or to meet manufacturing process requirements, in some embodiments, the distal end of the gastric tube 50 is in indirect communication with the gastric tube passageway 30a via a connector.

In other embodiments, the distal end of the gastric tube 50 is in direct communication with the gastric tube lumen 30 a.

Referring to fig. 10 and 11, the video laryngeal mask includes a hose 70 extending at least partially into the seal housing 30, a proximal end of the hose 70 is in sealing engagement with the seal housing 30, a distal end of the hose 70 forms a blind end 70a, a viewing tube is disposed through the viewing channel 12a and within the hose 70, a distal end of the viewing tube is disposed within the hose 70, the distal end of the hose 70 is closed by a light transmissive material, a space within the hose 70 is in communication with the viewing channel 12a in the conduit 10, and during use of the video laryngeal mask, the viewing tube is inserted into the distal end of the viewing channel 12a from the proximal end of the viewing channel 12a and extends into the blind end 70a, and after use, the viewing tube is removable from the viewing channel 12a or from the hose 70.

The viewing tube is enclosed within the viewing channel 12a and within the hose 70 and does not contact the patient's internal tissue during use, allowing for relatively safe reuse of the viewing tube. According to the national relevant standard, the equipment which can be reused in the operation needs to be sterilized at a high level after the operation if the equipment is contacted with human tissues in the operation, and can be sterilized at a general level after the operation if the equipment is not contacted with the human tissues in the operation. In the related art, the end of the viewing tube is exposed in the sealing seat, and may contact with secretions and other tissues in the patient, such as the epiglottis, and therefore, the patient needs to be soaked with a disinfectant or sterilized at a high level after operation. In the embodiment of the application, the visual tube is not contacted with a patient, the disinfection processes such as soaking in disinfectant are not needed in the postoperative disinfection procedure, and the lower-grade disinfection modes such as wiping are used, so that the application is convenient and quick and has low use cost.

It will be appreciated that the hose 70 is made of a flexible material so that the hose 70 can more easily follow the distal end of the viewing tube to bend simultaneously, reducing the resistance of the hose 70 to bending of the viewing tube.

The video device comprises a display (not shown), the video tube is in an elongated tubular shape, the far end of the video tube is provided with an image sensor, the inside of the video tube is provided with a cable, and the cable can transmit image signals acquired by the image sensor to the display. It should be noted that the display may have a signal processing capability and an image display function, or may have only an image display function, and the other components may process the image signal and display the processed image signal through the display.

Referring to fig. 4, the connection base 20 includes a connection platform 21 and a plug post 22 connected to the connection platform 21, and the plug 21a, the light guide 23a and the gastric tube connection 23b penetrate through the connection platform 21. The insertion post 22 is internally provided with a respiratory tract 22a and an assembly channel 22b, the respiratory tract 22a forms a part of the respiratory tract 20a, and the light guide 40, the stomach tube 50 and the video tract 12a are all arranged in the assembly channel 22b in a penetrating way.

In practical use, the proximal end of the light guide 40 may need to be fixed to the connector 20, the viewing tube may need to be inserted and pulled out through the insertion opening 21a, and the gastric suction tube may need to be inserted from the proximal end of the gastric tube 50 during operation, so that the above functional requirements objectively require that the insertion opening 21a, the light guide opening 23a and the gastric tube connection opening 23b be scattered and penetrated on the connection platform 21, so as to ensure a sufficient installation space.

When the laryngeal mask is accurately placed in the patient, the upper and lower incisors of the patient are generally engaged with the region of the insertion post 22, so that the insertion post 22 in this embodiment is made of a material having a certain toughness, thereby providing support for the respiratory tract 22a and the assembly channel 22b in the insertion post 22 and preventing the patient from biting the respiratory tract 22a and the assembly channel 22b into collapse or breakage.

In some embodiments of the present application, the light guide 40 and the gastric tube 50 are sealingly adhered to the connector 20, and in other embodiments, the light guide 40 and the gastric tube 50 may be clamped to the connector 20.

The post 22 is inserted into the catheter 10 and the proximal end of the post 22 may be sealed by adhesive to ensure the reliability and air tightness of the connection of the catheter 10 to the post 22.

For example, referring to fig. 2 and 4, the connection base 20 includes a sealing cover 23, a notch 21b communicating with the assembly channel 22b is provided on the connection platform 21, the sealing cover 23 seals the notch 21b, and the light guide opening 23a and the gastric tube connection opening 23b penetrate through the sealing cover 23.

Because the proximal ends of the light guide 40 and the gastric tube 50 are all required to be connected with the connecting seat 20 in a sealing way, namely, the proximal ends of the light guide 40 and the gastric tube 50 are respectively penetrated in the light guide opening 23a and the gastric tube connecting opening 23b in a sealing way, the assembly of the light guide 40 and the gastric tube 50 in the laryngeal mask is facilitated by arranging the notch 21b communicated with the assembly channel 22b on the connecting platform 21, and the notch 21b is sealed by arranging the sealing cover 23, so that the light guide 40 and the gastric tube 50 are in sealing connection with the sealing cover 23, and the sealing performance of the light guide 40 and the gastric tube 50 can be improved by arranging the sealing cover 23.

Meanwhile, considering the patient's mouth opening degree and comfort, the overall size of the plug-in post 22 needs to be as small as possible, so the overall arrangement in the plug-in post 22 needs to be more compact, therefore, referring to fig. 5, the respiratory tract 22a and the assembly channel 22b are formed in the plug-in post 22 in this embodiment, and the light guide 40, the gastric tube 50 and the video tract 12a are all arranged in the assembly channel 22b in a penetrating manner, so that the overall size of the plug-in post 22 can be reduced by reasonably arranging the internal space of the plug-in post 22.

In some embodiments of the present application, referring to fig. 1 and 4, a breathing tube connector 24 is disposed on a side of the connection platform 21 away from the plug-in post 22, the breathing tube connector 24 is used for connecting a breathing machine tube, the breathing cavity 22a forms a part of the breathing channel 20a, and the breathing cavity 22a is communicated with a space in the breathing tube connector 24 and forms the breathing channel 20a together.

In an embodiment, referring to fig. 6, the plugging post 22 includes a peripheral post 221 and a partition wall 222 disposed in the peripheral post 221, the partition wall 222 divides an inner space of the peripheral post 221 into a respiratory tract 22a and an assembly channel 22b, the partition wall 222 and the peripheral post 221 are integrally formed, the respiratory tract 22a and the assembly channel 22b are not communicated, so that air flow can be efficiently introduced into the lung of a patient, and the partition wall 222 is disposed, so that the light guide 40 and the gastric tube 50 can be conveniently placed in the assembly channel 22b, i.e. the light guide 40 and the gastric tube 50 are not inserted into the respiratory tract 22a when placed in the assembly channel 22b, thereby realizing the assembly controllability of the light guide 40 and the gastric tube 50.

Referring to fig. 7, the catheter 10 includes a guide sleeve 11 and a tube 12 disposed in the guide sleeve 11, the guide sleeve 11 is wrapped around the circumferential outer surface of the peripheral cylinder 221, the tube wall of the tube 12 is connected with the inner wall of the guide sleeve 11, through the arrangement of the tube 12, the space in the tube 12 is a video cavity 12a, and the air guide channel 10a and the video cavity 12a are not communicated with each other, so that the air guide channel 10a and the video cavity 12a have better air tightness, and the video tube can be conveniently placed in the video cavity 12a, i.e. the video tube cannot be inserted into the air guide channel 10a when being placed in the video cavity 12 a.

Because the video tube is inserted in the preoperative field, the time for inserting the video tube, namely the preoperative preparation time, is saved, the time is precious for the operation, and especially for emergency treatment in emergency rooms or emergency rescue in accident sites, the first minute and second are essential. The guide sleeve 11 and the pipe body 12 in this embodiment are integrally formed, and in other embodiments, the pipe body 12 may be adhered to the guide sleeve 11.

In one embodiment, referring to fig. 5 to 7, a slit 221a is formed on a sidewall of the peripheral cylinder 221; the joint of the pipe body 12 and the inner wall of the guide sleeve 11 is clamped into the gap 221a, so that the guide pipe 10 and the plug-in column 22 can be positioned in the assembly process, the relative displacement of the guide pipe 10 relative to the plug-in column 22 in the use process can be prevented, the use convenience is improved, meanwhile, the size of the pipe body 12 in the width direction of the guide sleeve 11 can be reduced as much as possible due to the fact that the pipe body 12 and the guide sleeve 11 are co-walled, and the integrated die processing of the pipe body 12 and the guide sleeve 11 is facilitated.

In order to enable the efficient introduction of air flow into the patient's lungs, referring to fig. 5-8, in an embodiment of the present application, the laryngeal mask includes a filler member 60, the filler member 60 being disposed within the post 22 such that the laryngeal mask is capable of effectively securing the light guide and the gastric tube without increasing the size.

Specifically, the filler element 60 is disposed in the gap between the side wall of the fitting channel 22b and the side walls of the light guide 40, the gastric tube 50 and the viewing channel 12 a.

Since the light guide 40, the gastric tube 50 and the video channel 12a are all disposed in the assembly channel 22b and the air guide channel 10a in a penetrating manner, the air guide channel 10a is communicated with the space in the breathing channel 20a and the sealing seat 30, that is, the dead space inevitably exists in the assembly channel 22b, the dead space refers to an ineffective cavity affecting ventilation efficiency, the effective air flow exchange of the airway of the patient can be affected by the dead space with a larger capacity, particularly for the laryngeal mask for children, ventilation capacity is relatively small, and the existence of the dead space with a larger capacity can generate a larger potential safety hazard for the patient. Thus, by providing the filler member 60 in the gap between the side wall of the fitting channel 22b and the side walls of the light guide member 40, the gastric tube 50 and the viewing channel 12a, the dead space in the fitting channel 22b is filled by the filler member 60, whereby the airflow flow efficiency is improved, so that the airflow can be efficiently introduced into the lungs of the patient.

Meanwhile, the filling piece 60 is arranged, so that the light guide piece 40 and the stomach tube 50 are conveniently assembled and fixed, and when air flows through the air guide channel 10a, the light guide piece 40 and the stomach tube 50 cannot shake obviously and generate abnormal sound; in addition, the arrangement of the filling member 60 reduces the molding difficulty of the connecting seat 20, and the filling member is simple to assemble and easy to operate in the production process.

In some embodiments, the filler element 60 is integrally formed with the plug post 22.

In other embodiments, the distal end of the fitting channel 22b may also be sealed such that the air guide channel 10a is not in communication with the fitting channel 22 b.

In one embodiment, referring to fig. 5, the respiratory tract 22a and the fitting channel 22b are arranged along the width direction of the catheter 10, the gastric tube 50 and the tube body 12 are arranged along the thickness direction in the fitting channel 22b, that is, the respiratory tract 22a is located at one side of the width direction of the insertion post 22, and the light guide 40, the gastric tube 50 and the tube body 12 are located at the other side of the width direction of the insertion post 22, so that the arrangement of the light guide 40, the gastric tube 50 and the tube body 12 does not interfere with the arrangement of the respiratory tract 22a, and by reasonable layout, the external dimension of the laryngeal mask is made as small as possible without affecting the use.

Referring to fig. 5, in the present embodiment, the number of the filling members 60 is at least two, and the filling members 60 are disposed in the space on two opposite sides of the central line between the gastric tube 50 and the tube body 12. The cross-sectional shape of the gastric tube 50 is generally circular, and the cross-sectional size of the gastric tube 50 is required to ensure that the gastric suction tube can pass smoothly; the cross-sectional shape of the tube 12 is also generally circular, and the cross-sectional size of the tube 12 is required to ensure that the viewing tube passes smoothly.

Since the cross-sectional shapes of the gastric tube 50 and the tube body 12 are substantially circular, dead spaces exist between the opposite sides of the center line of the gastric tube 50 and the tube body 12 and the side walls of the fitting passage 22b, and thus, by providing the packing 60 in the spaces on the opposite sides of the center line of the gastric tube 50 and the tube body 12 for packing the dead spaces on the opposite sides of the center line of the gastric tube 50 and the tube body 12, ventilation efficiency is improved, so that the air flow can be efficiently introduced into the lungs of the patient.

Referring to fig. 5, two filling members 60 constrain the gastric tube 50 therebetween, so that dead space formed on the peripheral side of the gastric tube 50 can be reduced, the proximal end of the gastric tube 50 is fixed on the connecting seat 20 by passing through the gastric tube connecting port 23b in a sealing manner, but in order to prevent obvious shaking and abnormal sound of the gastric tube 50 when air flows through the air guide channel 10a, the gastric tube 50 is constrained between the two filling members 60, on one hand, the gastric tube 50 can be limited, obvious shaking of the gastric tube 50 in the plugging column 22 is prevented, on the other hand, the gastric tube 50 can be assembled in place without interfering with the assembly of other parts in the mounting area, and the problem of sealing connection between the gastric tube 50 and the connecting seat 20 caused by shaking in the plugging column 22 is prevented.

Referring to fig. 5, 6 and 8, the filling member 60 includes a first filling member 61 and a second filling member 62 disposed opposite to each other, a first clamping key 222a is disposed on a side wall of the partition wall 222 located on one side of the assembly channel 22b, a first clamping groove 61a is formed on the first filling member 61, and the first clamping groove 61a is clamped into the first clamping key 222a to position the first filling member 61.

It is understood that the first engaging key 222a may extend along the length direction of the partition wall 222 from the proximal end to the distal end of the partition wall 222, from a certain position of the partition wall 222 along the length direction to the distal end, or at least two first engaging keys 222a disposed at intervals along the length direction from the partition wall 222.

In some embodiments, a first locking groove 61a may be formed on a side wall of the partition wall 222 located on the side of the assembly channel 22b, and a first locking key 222a may be formed on the first filling member 61.

Referring to fig. 5, 6 and 8, a second locking key 221b is disposed on a side wall of the assembly channel 22b, and a second locking groove 62a is formed on the second filling member 62, and the second locking groove 62a is locked into the second locking key 221b to position the second filling member 62.

It will be appreciated that the second engaging key 221b may extend along the length direction of the fitting channel 22b, from the proximal end to the distal end of the fitting channel 22b, from a position along the length direction of the fitting channel 22b to the distal end, or at least two second engaging keys 221b may be disposed at intervals along the length direction of the fitting channel 22 b.

In some embodiments, a second locking groove 62a may be formed on a side wall of the assembly channel 22b, and a second locking key 221b may be formed on the second filling member 62.

In an embodiment, the end portions of the first clamping key 222a and the second clamping key 221b may be planar, or may be an outwardly protruding arc surface, for example, a spherical cap, an ellipsoidal surface, or the like. In the embodiment of the present application, referring to fig. 6, the end portions of the first clamping key 222a and the second clamping key 221b are outwardly protruding cambered surfaces, the first clamping groove 61a and the second clamping groove 62a are inwardly recessed cambered surfaces, and the end portions of the first clamping key 222a and the second clamping key 221b are outwardly protruding cambered surfaces, so that the clamping resistance can be reduced, the reliability of the clamping can be improved, and the assembly of the first filling member 61 and the second filling member 62 is facilitated.

In one embodiment, referring to fig. 8, the filling member 60 is provided with a clamping groove 60a, and the clamping groove 60a is used for restraining the light guide member 40 therein.

The clamping groove 60a is used for restraining the light guide piece 40 in the connecting seat 20, so that dead space formed on the periphery of the light guide piece 40 can be reduced, the proximal end of the light guide piece 40 is fixed on the connecting seat 20 through penetrating through the light guide opening 23a in a sealing mode, however, in order to prevent air flow from flowing through the air guide channel 10a, the light guide piece 40 cannot shake obviously and generate abnormal sound, the clamping groove 60a is used for restraining the light guide piece 40 in the connecting seat, on one hand, the light guide piece 40 can be limited, obvious shaking of the light guide piece 40 in the plug-in column 22 is prevented, on the other hand, the light guide piece 40 can be guaranteed to be assembled in place, and assembly of other parts in an installation area is not interfered.

In some embodiments, two of the filler members 60 may also be used to constrain the light guide 40 therebetween.

In an embodiment, referring to fig. 9, a positioning ring 13 is disposed on an inner wall of the catheter 10, and the gastric tube 50 is inserted into the positioning ring 13 to position a portion of the catheter 10 located in the air guide channel 10a, so as to ensure that the gastric tube 50 can be assembled in place, and reduce the influence on the flow of the air flow in the air guide channel 10a as much as possible while not interfering with the assembly of the light guide 40 into the air guide channel 10a, and further prevent the gastric tube 50 from shaking obviously and generating abnormal sound when the air flow flows through the air guide channel 10a.

In view of patient's openness and comfort, it is necessary to reduce the external dimensions of the catheter 10 and the seal holder 30 as much as possible to improve patient's comfort and the laryngeal mask's placement, so that for reasonable layout of the gastric tube 50 and the light guide 40 in the air guide channel 10a, the gastric tube 50 and the tube body 12 are gradually changed from being arranged in the fitting channel 22b in the thickness direction of the catheter 10 to being arranged in the catheter 10 in the width direction of the catheter 10, thereby fully utilizing the space of the air guide channel 10a, and thereby effectively reducing the external dimensions of the catheter 10.

Specifically, the positioning ring 13 is disposed at a position where the external dimension of the catheter 10 becomes smaller, that is, at a corner of the gastric tube 50 in the length direction, and the gastric tube 50 is disposed along the width direction of the catheter 10 with the catheter body 12 after penetrating the positioning ring 13.

The various embodiments/implementations provided by the application may be combined with one another without contradiction.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims (11)

1. A laryngeal mask, comprising:

the device comprises a guide pipe (10), wherein an air guide channel (10 a) and a video cavity channel (12 a) used for being matched with a video pipe in a plugging and unplugging mode are formed in the guide pipe (10), and the air guide channel (10 a) and the video cavity channel (12 a) are not communicated with each other;

a seal holder (30) connected to the distal end of the catheter (10), the seal holder (30) having a gastric tube lumen (30 a);

the connecting seat (20), the connecting seat (20) is arranged at the proximal end of the catheter (10), the connecting seat (20) is provided with a breathing channel (20 a), a plug port (21 a), a light guide port (23 a) and a stomach tube connecting port (23 b), and the air guide channel (10 a) is communicated with the breathing channel (20 a) and the space in the sealing seat (30);

a light guide member (40), wherein the light guide member (40) is arranged in the air guide channel (10 a), and the proximal end of the light guide member is hermetically penetrated in the light guide opening (23 a);

a gastric tube (50), said gastric tube (50) extending from a proximal end of said air guide channel (10 a) to a distal end thereof, said distal end of said gastric tube (50) being threaded out of said distal end of said catheter (10) and communicating with said gastric tube lumen (30 a), said proximal end of said gastric tube (50) sealingly passing through said gastric tube connection port (23 b).

2. Laryngeal mask according to claim 1, characterized in that the connection socket (20) comprises a connection platform (21) and a plug post (22) connected with the connection platform (21), the plug post (22) is inserted into the catheter (10), the plug opening (21 a), the light guide opening (23 a) and the stomach tube connection opening (23 b) all penetrate through the connection platform (21), a respiratory tract (22 a) and an assembly channel (22 b) are formed in the plug post (22), the respiratory tract (22 a) forms a part of the respiratory tract (20 a), and the light guide (40), the stomach tube (50) and the visual tract (12 a) all penetrate into the assembly channel (22 b).

3. The laryngeal mask according to claim 2, characterized in that the laryngeal mask comprises a filling member (60), the filling member (60) being arranged in a gap between a side wall of the fitting channel (22 b) and a side wall of the light guide (40), the gastric tube (50) and the viewing channel (12 a).

4. A laryngeal mask according to claim 3, characterised in that the plug-in post (22) comprises a peripheral post (221) and a partition wall (222) arranged inside the peripheral post (221), the partition wall (222) dividing the inner space of the peripheral post (221) into the respiratory tract (22 a) and the fitting channel (22 b), the side wall of the peripheral post (221) being provided with a slit (221 a); the guide tube (10) comprises a guide sleeve (11) and a tube body (12) arranged in the guide sleeve (11), the tube wall of the tube body (12) is connected with the inner wall of the guide sleeve (11), the space in the tube body (12) is the video cavity (12 a), the joint of the tube body (12) and the inner wall of the guide sleeve (11) is clamped into the gap (221 a), and the guide sleeve (11) is wrapped on the circumferential outer surface of the peripheral column casing (221).

5. The laryngeal mask according to claim 4, characterized in that the respiratory tract (22 a) and the fitting channel (22 b) are arranged in the width direction of the catheter (10), the gastric tube (50) and the tube body (12) being arranged in the thickness direction in the fitting channel (22 b); the number of the filling pieces (60) is at least two, and the filling pieces (60) are arranged in the space on two opposite sides of the central connecting line of the gastric tube (50) and the tube body (12).

6. The laryngeal mask according to claim 5, wherein two of said fillers (60) constrain said gastric tube (50) therebetween.

7. The laryngeal mask according to claim 5, characterized in that the filling member (60) is provided with a clamping groove (60 a), the clamping groove (60 a) constraining the light guide (40) therein.

8. The laryngeal mask according to claim 4, characterised in that the filling member (60) comprises a first filling member (61) and a second filling member (62) arranged opposite each other;

a first clamping key (222 a) is arranged on the side wall of the partition wall (222) positioned at one side of the assembly channel (22 b), a first clamping groove (61 a) is formed in the first filling piece (61), and the first clamping groove (61 a) is clamped into the first clamping key (222 a) to position the first filling piece (61); and/or the number of the groups of groups,

the side wall of the assembly channel (22 b) is provided with a second clamping key (221 b), the second filling piece (62) is provided with a second clamping groove (62 a), and the second clamping groove (62 a) is clamped into the second clamping key (221 b) to position the second filling piece (62).

9. Laryngeal mask according to claim 1, characterized in that the inner wall of the catheter (10) is provided with a positioning ring (13), the gastric tube (50) being threaded into the positioning ring (13).

10. Laryngeal mask according to claim 1, characterized in that the connection base (20) comprises a sealing cover (23), the connection platform (21) is provided with a notch (21 b) communicating with the fitting channel (22 b), the sealing cover (23) seals the notch (21 b), and the light guide opening (23 a) and the gastric tube connection opening (23 b) penetrate the sealing cover (23).

11. A video laryngeal mask comprising a viewing device and a laryngeal mask according to any one of claims 1 to 10, said viewing device being connected to said connector base (20);

the video device comprises a control part and a video tube, wherein the control part is removably connected with the connecting seat (20), the video tube is inserted into the video cavity (12 a) in a pluggable manner through the plug-in opening (21 a), the far end of the video tube extends into a space in the sealing seat (30), and the far end of the video tube can be bent and reset under the control of the control part.