Laryngeal mask

Abstract

The present invention discloses a laryngeal mask, comprising a tube body and a mask body, wherein the tube body is provided with a breathing cavity for circulation of breathing gas and a digestive cavity for circulation of waste liquid generated during implantation ventilation, the tube body has a tube connection end, the mask body is provided with a mask connection end, the mask connection end is sealedly connected to the tube connection end, the mask body is provided with a breathing chamber for communicating with the respiratory tract and a digestive chamber for communicating with the digestive tract, the breathing chamber is communicated with the breathing cavity, and the digestive chamber is communicated with the digestive cavity; a thinning portion is provided at the connection between the mask connection end and the tube connection end, and the wall thickness of the thinning portion is less than the wall thickness of the tube body and the rest of the mask body. The technical solution of the present invention can solve the problem that after the laryngeal mask is implanted in the patient's larynx, it is easy to deform as the patient's head twists, thereby affecting the ventilation after the laryngeal mask is implanted.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a laryngeal mask. Background Art

[0002] The laryngeal mask is an artificial airway device that allows patients to maintain spontaneous breathing during surgery and implement positive pressure ventilation. When used, the laryngeal mask needs to be implanted in the patient's larynx. After the laryngeal mask is implanted in the patient's larynx, when the patient's head twists, it is easy to cause the laryngeal mask to deform, thus affecting ventilation after the laryngeal mask is implanted. Summary of the invention

[0003] The main purpose of the present invention is to provide a laryngeal mask, which aims to solve the problem that after the laryngeal mask is implanted in the patient's larynx, it is easy to be deformed as the patient's head twists, thereby affecting the ventilation after the laryngeal mask is implanted.

[0004] To achieve the above-mentioned purpose, the laryngeal mask proposed in the present invention includes: a tube body, which is provided with a breathing cavity for circulation of breathing gas and a digestive cavity for circulation of waste liquid generated during the implant ventilation process, and the tube body has a tube connecting end; and a mask body, which is provided with a mask connecting end, and the mask connecting end is sealed and connected to the tube connecting end, and the mask body is provided with a breathing chamber for communicating with the respiratory tract and a digestive chamber for communicating with the digestive tract, the breathing chamber is communicated with the breathing cavity, and the digestive chamber is communicated with the digestive cavity; a thinning portion is provided at the connection between the mask connecting end and the tube connecting end, and the wall thickness of the thinning portion is less than the wall thickness of the tube body and the rest of the mask body.

[0005] Optionally, the wall thickness of the thinned portion gradually becomes thinner and then thicker from one end thereof connected to the tube body to one end thereof connected to the cover body.

[0006] Optionally, the outer walls of the cover connecting end and the tube connecting end are smoothly arranged, and the inner walls have a recessed portion to form the thinned portion.

[0007] Optionally, an outer diameter of the thinned portion is smaller than an outer diameter of the tube body and an outer diameter of the cover body.

[0008] Optionally, the outer diameter of the thinned portion gradually decreases and then gradually increases from one end thereof connected to the tube body to one end thereof connected to the cover body.

[0009] Optionally, the breathing chamber is provided with a breathing port, which is used to communicate with the respiratory tract, and the peripheral ring of the breathing port is provided with an air bag for sealingly abutting against the respiratory tract opening of the patient.

[0010] Optionally, a structural reinforcement portion is provided on the wall of the airbag.

[0011] Optionally, the structural reinforcement portion is provided at an end of the airbag close to the cover connection end.

[0012] Optionally, the wall thickness of one end of the airbag close to the cover connecting end is greater than the wall thickness of the remaining parts of the airbag to form the structural reinforcement portion.

[0013] Optionally, the structural reinforcement portion is provided on an inner wall of the airbag.

[0014] The technical solution of the present invention is to set a breathing cavity for the circulation of breathing gas and a digestive cavity for the circulation of waste liquid generated during the implantation ventilation process on the tube body, set a breathing chamber connected to the breathing tract and a digestive chamber connected to the digestive tract on the mask body, seal the tube connection end and the mask connection tube, so that the breathing cavity is connected to the breathing cavity, and the digestive cavity is connected to the digestive cavity, so that when the laryngeal mask is implanted in the patient's throat, the breathing gas can flow from the breathing cavity through the breathing cavity and then enter the patient's throat for the patient to breathe, and the waste liquid generated during the implantation ventilation process can enter the digestive cavity through the digestive cavity and then be discharged from the patient's body. A thinning portion is set at the connection between the mask connection end and the tube connection end, and the wall thickness of the thinning portion is less than the wall thickness of the rest of the mask body, so that when the laryngeal mask is implanted in the patient's throat, when the patient's head twists, the thinning portion is deformed before the rest of the mask body to adapt to the position change of the patient's head, so that the deformation force generated by the twisting of the patient's head on the mask body is small, so that the mask body can better maintain the preset shape, thereby ensuring the smooth progress of the implantation ventilation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of an embodiment of a laryngeal mask of the present invention;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the middle laryngeal mask from another perspective;

[0018] Figure 3 for Figure 1 Front view of the middle laryngeal mask;

[0019] Figure 4 for Figure 1 Right view of the middle laryngeal mask;

[0020] Figure 5 for Figure 1 Posterior view of the medium laryngeal mask.

[0021] Description of Figure Numbers:

[0022] Label name Label name 100 tube body 212 Limit slot 101 Pipe connection end 220 Breathing port 110 Respiratory cavity 221 Airbag 120 Digestive tract 222 Thickening parts 121 The first sub-cavity 230 Digestive chamber 122 The second sub-cavity 231 First subchamber 130 Thinning section 232 Second subchamber 200 Cover 240 Digestive system 201 Hood connection end 250 Circulation port 202 Implantation end 251 The first sub-port 210 Breathing Chamber 252 The second sub-port 211 Boss

[0023] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] The invention provides a laryngeal mask.

[0028] In one embodiment of the present invention, Figure 1 and Figure 2As shown, the laryngeal mask comprises a tube body 100 and a mask body 200. The tube body 100 is provided with a respiratory cavity 110 and a digestive cavity 120, and the tube body 100 has a tube connecting end 101, wherein the respiratory cavity 110 is used for circulation of respiratory gas, and the digestive cavity 120 is used for circulation of waste liquid generated during implantation ventilation. The mask body 200 is provided with a mask connecting end 201, which is sealedly connected to the tube connecting end 101, and the mask body 200 is provided with a respiratory chamber 210 for communicating with the respiratory tract and a digestive chamber 230 for communicating with the digestive tract, the respiratory chamber 210 is in communication with the respiratory cavity 110, and the digestive chamber 230 is in communication with the digestive cavity 120. In addition, a thinning portion 130 is provided at the connection between the mask connecting end 201 and the tube connecting end 101, and the wall thickness of the thinning portion 130 is less than the wall thickness of the tube body 100 and the rest of the mask body 200.

[0029] The technical solution of the present invention is to set a breathing cavity 110 for breathing gas to circulate and a digestive cavity 120 for waste liquid generated during the implantation ventilation process on the tube body 100, set a breathing chamber 210 connected to the breathing tract and a digestive chamber 230 connected to the digestive tract on the mask body 200, and seal the tube connecting end 101 and the mask connecting tube to connect the breathing cavity 110 with the breathing cavity 210, and the digestive cavity 120 with the digestive cavity 230. When the laryngeal mask is implanted in the patient's throat, breathing gas can flow from the breathing cavity 110 through the breathing cavity 210 and then enter the patient's throat for the patient to breathe, and the waste liquid generated during the implantation ventilation process can enter the digestive cavity 120 through the digestive cavity 230 and then be discharged from the patient's body. A thinning portion 130 is provided at the connection between the mask connecting end 201 and the tube connecting end 101. The wall thickness of the thinning portion 130 is smaller than the wall thickness of the remaining parts of the mask body 200, so that when the laryngeal mask is implanted in the patient's throat, when the patient's head twists, the thinning portion 130 deforms preferentially before the remaining parts of the mask body 200 to adapt to the position change of the patient's head, so that the deformation force generated by the twisting of the patient's head on the mask body 200 is smaller, so that the mask body 200 can better maintain the preset shape, thereby ensuring that the implantation ventilation process is carried out smoothly.

[0030] In one embodiment, the wall thickness of the thinning portion 130 gradually thins and then thickens from the end where it connects to the tube body 100 to the end where it connects to the mask body 200, that is, the thickness of the middle part of the thinning portion 130 is the smallest. When the patient's head twists and causes the two ends of the mask body 200 to be subjected to torque in different directions, the thinning portion 130 with the smallest wall thickness is twisted and deformed first, so that the torque transmitted to the mask body 200 is very small, thereby avoiding the deformation of the mask body 200 and the impact on ventilation caused by the twisting of the patient's head during implantation and ventilation. In addition, since the wall thickness of the thinning portion 130 gradually thins and then thickens, that is, the change in the wall thickness of the thinning portion 130 is not a sudden change, the connection between the thinning portion 130 and the mask body 200 and between the thinning portion 130 and the tube body 100 is not easy to be damaged, so that even if the thinning portion 130 is twisted and deformed due to the twisting of the patient's head, the laryngeal mask can remain intact.

[0031] In one embodiment, the outer walls of the mask connection end 201 and the tube connection end 101 are smoothly arranged, and the inner walls have a recessed portion to form the thinned portion 130. The thinned portion 130 is formed by arranging the recessed portion on the inner walls of the mask connection end 201 and the tube connection end 101, and the outer walls of the mask connection end 201 and the tube connection end 101 are smoothly arranged, so that the arrangement of the thinned portion 130 does not hinder the process of implanting the laryngeal mask into the patient's larynx.

[0032] In one embodiment, the outer diameter of the thinned portion 130 is smaller than the outer diameter of the tube body 100 and the outer diameter of the mask body 200. During the process of implanting the laryngeal mask into the patient's throat, the tube body 100 and the patient's throat are squeezed against each other, and the squeezing force at the epiglottis is relatively large. In the previous stage of implanting the laryngeal mask, the squeezing force of each section of the tube body 100 in the length direction on the epiglottis remains stable. Since the outer diameter of the thinned portion 130 is smaller than the outer diameter of the tube body 100, when the thinned portion 130 passes through the epiglottis, the squeezing force on the epiglottis suddenly decreases, that is, during the process of implanting the laryngeal mask into the patient's throat, the thinned portion 130 will produce a sense of emptiness when passing through the epiglottis, so that the operator can accurately know the insertion position of the laryngeal mask even if he cannot see the details of the throat, reducing the number of times the insertion position is adjusted.

[0033] It can be understood that in this embodiment, when the cross-section of the thinning portion 130 is circular, the outer diameter of the thinning portion 130 is the diameter of the cross-section of the thinning portion 130, and when the cross-section of the thinning portion 130 is non-circular, the outer diameter of the thinning portion 130 is the equivalent diameter of the cross-section of the thinning portion 130.

[0034] In one embodiment, the outer diameter of the thinned portion 130 gradually decreases and then gradually increases from the end thereof connected to the tube body 100 to the end thereof connected to the mask body 200. That is, the thinned portion 130 smoothly tapers from the end connected to the mask body 200 to form a concave portion and then smoothly expands to an outer diameter equal to the outer diameter of the tube body 100, thereby making the insertion and removal of the laryngeal mask smoother while maintaining the sense of emptiness during the insertion process, thereby reducing the discomfort caused to the patient.

[0035] In the above embodiment, the breathing chamber 210 is provided with a breathing port 220, which is used to communicate with the respiratory tract, and the periphery of the breathing port 220 is provided with an air bag 221 for sealing against the patient's respiratory tract opening. Thus, the sealing effect between the mask body 200 and the patient's throat is ensured, so that during the implantation ventilation process, the breathing gas flowing into the breathing chamber 210 through the breathing cavity 110 can enter the patient's respiratory tract more smoothly, avoiding air leakage, and making the patient more comfortable and safer.

[0036] In one embodiment, a structural reinforcement portion is provided on the wall of the airbag 221. By providing the structural reinforcement portion on the wall of the airbag 221, the airbag 221 is not easily over-deformed, so that when the laryngeal mask is implanted in the patient's throat, when the patient's head twists to cause the thinning portion 130 to deform to adapt to the change in the position of the patient's head, the mask body 200 and the airbag 221 are deformed to a small extent, so as to ensure that the implantation ventilation process proceeds smoothly.

[0037] In one embodiment, the structural reinforcement part is disposed at one end of the airbag 221 close to the mask connection end 201. Since when the thinned portion 130 is deformed due to the twisting of the patient's head, the end of the airbag 221 close to the mask connection end 201 (i.e., the end of the airbag 221 close to the thinned portion 130) is subjected to a greater torsion force than the remaining parts of the airbag 221, the structural reinforcement part is disposed at one end of the airbag 221 close to the mask connection end 201, so that the part of the airbag 221 that is most likely to be deformed due to the twisting of the patient's head has a greater structural strength, thereby better preventing the airbag 221 from excessively deforming during the implantation ventilation process and affecting the ventilation.

[0038] In one embodiment, the wall thickness of the end of the airbag 221 close to the mask connection end 201 is greater than the wall thickness of the rest of the airbag 221 to form a structural reinforcement portion. By setting the wall thickness of the end of the airbag 221 close to the mask connection end 201 to be greater than the wall thickness of the rest of the airbag 221, the structural strength of the airbag 221 at this part is greater than the structural strength of the airbag 221 at other parts, so that while forming the structural reinforcement portion, the structure of the airbag 221 itself is not destroyed, and there is no need to set additional components on the airbag 221, so that the overall structure of the laryngeal mask is simple.

[0039] In one embodiment, the structural reinforcement part is provided on the inner wall of the airbag 221. By providing the structural reinforcement part on the inner wall of the airbag 221, the outer wall surface of the airbag 221 remains smooth, so that the provision of the structural reinforcement part does not hinder the laryngeal mask implantation process.

[0040] In one embodiment of the present invention, the laryngeal mask comprises a tube body 100 and a mask body 200, the tube body 100 is provided with a breathing cavity 110, the breathing cavity 110 is used for the circulation of breathing gas, the tube body 100 has a tube connection end 101, the mask body 200 has a mask connection end 201, the mask connection end 201 is sealed and connected to the tube connection end 101, the mask body 200 is provided with a breathing chamber 210 connected with the breathing cavity 110, and the breathing chamber 210 is provided with a breathing port 220 for communicating with the breathing tract. When the laryngeal mask is implanted in the patient's larynx, the breathing port 220 is aligned with the patient's breathing tract opening, so that the breathing tract is connected with the breathing cavity 110, so as to provide breathing gas to the breathing tract by using the breathing cavity 110. The edge of the breathing port 220 is provided with a support component (not shown in the figure), and the support component is used to support the epiglottis cartilage resting on the breathing port 220, so that the breathing port 220 is open.

[0041] The technical solution of the present invention connects the breathing chamber 210 with the respiratory tract by using the breathing port 220. When the laryngeal mask is implanted in the patient's throat, the breathing port 220 is aligned with the respiratory tract opening, so that the breathing chamber 210 is connected with the respiratory tract, and the respiratory tract 110 is connected with the breathing chamber 210, so that the respiratory tract is provided with breathing gas by using the respiratory tract 110. In addition, a support component is provided at the edge of the breathing port 220, and the epiglottis cartilage resting on the breathing port 220 is supported by the support component, so as to ensure that the breathing port 220 is in an open state, and the epiglottis cartilage is prevented from blocking the connection between the laryngeal mask and the respiratory tract and affecting the patient's breathing, so that the patient can breathe smoothly after the laryngeal mask is implanted.

[0042] In one embodiment, an airbag 221 is provided around the periphery of the breathing port 220, and the airbag 221 is used to seal against the patient's respiratory opening, thereby ensuring the sealing effect between the mask body 200 and the patient's throat, so that during the implant ventilation process, the breathing gas flowing into the breathing chamber 210 through the breathing cavity 110 can enter the patient's respiratory tract more smoothly, avoiding air leakage, so that the patient can be more comfortable and safer.

[0043] In one embodiment, the support assembly is disposed in the airbag 221. By disposing the support assembly in the airbag 221, the support assembly plays a supporting role while not directly contacting the patient's throat, thereby avoiding the support assembly from causing damage to the patient's throat, and improving the safety of the laryngeal mask. In addition, the provision of the support assembly also increases the thickness of the airbag 221 to a certain extent, thereby better ensuring the sealing effect between the airbag 221 and the patient's throat.

[0044] In one embodiment, the support component is disposed on the inner wall surface of the airbag 221. By disposing the support component on the inner wall surface of the airbag 221, on the one hand, the support component is not in direct contact with the patient's larynx to avoid the support component causing damage to the patient's larynx, and on the other hand, when the airbag 221 is squeezed, the support component can deform adaptively with the deformation of the wall of the airbag 221, so that the laryngeal mask can be implanted in the patient's larynx more smoothly.

[0045] In one embodiment, the support assembly includes a first reinforcement portion and a second reinforcement portion spaced apart on the inner wall surface of the airbag 221, and the first reinforcement portion and the second reinforcement portion prop up the portion of the airbag wall 221 between the first reinforcement portion and the second reinforcement portion to support the epiglottis cartilage. The portions of the airbag wall 221 other than the first reinforcement portion and the second reinforcement portion are more likely to deform than the first reinforcement portion and the second reinforcement portion. When the laryngeal mask is implanted in the patient's larynx, the portions between the first reinforcement portion and the second reinforcement portion are also propped up because the first reinforcement portion and the second reinforcement portion are not easily deformed, that is, the first reinforcement portion and the second reinforcement portion form a support bridge structure, so that the epiglottis cartilage can be placed on the support bridge, and the epiglottis cartilage is prevented from being placed on the respiratory port 220, thereby ensuring that the patient can breathe smoothly.

[0046] In one embodiment, the first reinforcement part and the second reinforcement part are reinforcement ribs provided on the inner wall surface of the airbag 221. By providing the first reinforcement rib and the second reinforcement rib on the inner wall surface of the airbag 221 to increase the structural strength of the part, the first reinforcement part and the second reinforcement part can play a role in supporting the epiglottis cartilage, the structure is simple, and the original structure of the airbag 221 is not damaged, thereby ensuring that the laryngeal mask is not easily damaged during use.

[0047] In one embodiment, the first reinforcement part and the second reinforcement part are in the shape of a strip, and the first reinforcement part and the second reinforcement part extend from the side of the airbag 221 close to the respiratory opening to the side of the airbag 221 close to the respiratory opening 220. Since the airbag 221 is arranged around the periphery of the respiratory opening 220, that is, one side of the airbag 221 is arranged close to the periphery of the respiratory opening 220, and the other side of the airbag 221 faces the respiratory opening of the patient, the first reinforcement part and the second reinforcement part are in the shape of a strip, and extend from the side of the airbag 221 close to the respiratory opening to the side of the airbag 221 close to the respiratory opening 220, so that the thickness of the airbag 221 from the respiratory opening 220 to the respiratory opening is increased, so that the airbag 221 can better play the role of supporting the epiglottic cartilage, and avoid the thickness of the airbag 221 from the respiratory opening 220 to the respiratory opening being too low, so that the epiglottic cartilage bypasses the first reinforcement part and the second reinforcement part and then rests on the respiratory opening 220 to block the respiratory opening 220.

[0048] In one embodiment, the edges of the first reinforcement part and the second reinforcement part are provided with rounded corners. By providing the rounded corners on the edges of the first reinforcement part and the second reinforcement part, when the airbag 221 is squeezed and deformed, the edges of the first reinforcement part and the second reinforcement part are not easy to damage the airbag 221; and after the laryngeal mask is implanted in the patient's larynx, the first reinforcement part and the second reinforcement part support the epiglottis cartilage while not easily causing damage to the patient's larynx.

[0049] In some embodiments, the first reinforcement part and the second reinforcement part are circular or elliptical. By setting the first reinforcement part and the second reinforcement part to be circular or elliptical, the edges of the first reinforcement part and the second reinforcement part are smoother, and it is not easy to damage the airbag 221, and it is not easy to cause damage to the patient's throat.

[0050] In the above embodiment, the support component is integrally formed with the inner wall of the airbag 221. The integral forming method makes the processing of the support component simpler and more convenient, and the support component will not move in the airbag 221 during the implantation and ventilation process, thereby stably supporting the epiglottis cartilage, thereby ensuring that the patient can breathe smoothly during the implantation and ventilation process.

[0051] Reference Figure 3 and Figure 4 In one embodiment of the present invention, the laryngeal mask comprises a tube body 100 and a mask body 200, the tube body 100 is provided with a breathing cavity 110, the breathing cavity 110 is used for circulating breathing gas, the tube body 100 has a tube connecting end 101, the mask body 200 has a mask connecting end 201, the mask connecting end 201 is sealed and connected to the tube connecting end 101, the mask body 200 is provided with a breathing chamber 210 for communicating with the respiratory tract, and the breathing chamber 210 is connected with the breathing cavity 110; the mask body 200 also has a front side facing the respiratory tract and a rear side facing away from the respiratory tract, the front side is provided with a breathing port 220, the breathing port 220 is used to connect the breathing chamber 210 with the respiratory tract, the peripheral ring of the breathing port 220 is provided with an air bag 221 for sealingly abutting against the respiratory tract opening of the patient, the air bag 221 is provided with a thickening member 222, and the thickening member 222 is used to increase the thickness of the mask body 200 in the front-to-back direction. In one embodiment, the thickening member 222 and the structural reinforcement portion are the same structure.

[0052] The technical solution of the present invention is to set a breathing cavity 110 on the tube body 100, set a breathing chamber 210 connected with the breathing cavity 110 on the mask body 200, set the breathing cavity 210 on the front side, set a breathing port 220 on the front side, connect the breathing cavity 210 with the patient's respiratory tract by means of the breathing port 220, and set an air bag 221 around the periphery of the breathing port 220, and seal the air bag 221 with the patient's respiratory tract opening. When the laryngeal mask is implanted in the patient's throat, the breathing port 220 is aligned with the patient's respiratory tract opening to connect the breathing cavity 110 with the respiratory tract, so that breathing gas is introduced into the respiratory tract by means of the breathing cavity 110 to ensure the patient's breathing. A thickening member 222 is provided on the airbag 221, and the thickening member 222 is utilized to increase the thickness of the mask body 200 in the front-to-back direction, so that after the laryngeal mask is implanted in the patient's throat, it can better seal against the throat to ensure the sealing effect; and, the provision of the thickening member 222 makes it difficult for the airbag 221 to be deformed as the patient's head twists when the laryngeal mask is implanted in the patient's throat, thereby further improving the sealing effect and enabling the patient to better obtain breathing gases.

[0053] In one embodiment, the mask body 200 further has a mask implantation end 202 opposite to the mask connection end 201, and the thickening member 222 is disposed close to the mask connection end 201 so that the thickness of the mask connection end 201 in the front-to-back direction is greater than the thickness of the mask implantation end 202 in the front-to-back direction. By disposing the thickening member 222 close to the mask connection end 201, the thickness of the mask connection end 201 in the front-to-back direction is greater than the thickness of the mask implantation end 202 in the front-to-back direction, so that during the process of implanting the laryngeal mask into the patient's larynx, the mask implantation end 202 that arrives at the larynx first can enter the larynx more smoothly, so that the laryngeal mask can be better implanted into the patient's larynx.

[0054] In one embodiment, the thickness of the mask body 200 in the front-to-back direction gradually decreases from the mask connection end 201 to the mask implantation end 202, that is, the mask implantation end 202 is smaller, so that the mask implantation end 202 is easier to enter the patient's throat, while ensuring that the mask connection end 201 has a larger throat, so as to better seal with the throat. In addition, the thickness of the mask body 200 in the front-to-back direction gradually changes, that is, during the process of implanting the laryngeal mask into the patient's throat, the smaller end enters the throat first, and then the gradually larger part slowly enters the throat, rather than suddenly implanting the large part into the throat, so that the throat has a gradual adaptation process, thereby reducing the discomfort caused to the patient during the laryngeal mask implantation process.

[0055] In one embodiment, the thickness of the mask body 200 in the front-to-back direction is greater than the thickness of the tube body 100 in the front-to-back direction, the rear side of the mask body 200 smoothly transitions with the tube body 100, and the airbag 221 is convexly arranged on the front side of the mask body 200. After the laryngeal mask is implanted in the patient's throat, the tube connection end 101 of the tube body 100 and the mask body 200 are located in the patient's throat, and the other end of the tube body 100 is located in the patient's mouth. The thickness of the tube body 100 in the front-to-back direction is set to be less than the thickness of the mask body 200 in the front-to-back direction, so as to reduce the discomfort caused by the tube body 100 to the patient's mouth while satisfying the sealing effect between the mask body 200 and the throat. The airbag 221 is convexly arranged on the front side of the mask body 200, and is used to seal and abut against the patient's respiratory opening. At the same time, the rear side of the mask body 200 smoothly transitions with the tube body 100, so that while the thickness of the mask body 200 in the front-to-back direction is greater than the thickness of the tube body 100 in the front-to-back direction, the connection between the mask body 200 and the tube body 100 poses less obstacle to the implantation of the laryngeal mask.

[0056] In one embodiment, one end of the thickening member 222 is connected to the tube body 100, and the other end is connected to the airbag 221. The two ends of the thickening member 222 are connected to the tube body 100 and the airbag 221 respectively, so that when the laryngeal mask is implanted in the patient's throat, when the connection between the mask body 200 and the tube body 100 is squeezed, the thickening member 222 can better support the thickness of the laryngeal mask in the front-to-back direction and is not easily crushed, thereby making the laryngeal mask and the patient's throat more sealed.

[0057] In one embodiment, the tube body 100, the airbag 221 and the thickening member 222 are integrally formed, so that the processing of the laryngeal mask is more convenient, and the tube body 100, the airbag 221 and the thickening member 222 are integrally formed, so that the connection between the thickening member 222 and the airbag 221 is more stable and not easy to be damaged, so as to better play the thickening role. It can be understood that in this embodiment, the thickening member 222 and the airbag 221 are an integral structure, that is, the thickness of the wall of the airbag 221 at this location is greater than the thickness of the other parts to form the thickening member 222, and no other structure is required to be added to the wall, so as to ensure the integrity of the structure of the airbag 221 and not easy to be damaged. At the same time, the structural strength of the wall of the airbag 221 at this location is greater than that of the other parts, so that the part is more resistant to extrusion and not easy to deform, so that when the laryngeal mask is implanted in the patient's throat, the airbag 221 is not easy to deform with the twisting of the patient's head, thereby further improving the sealing effect and allowing the patient to better obtain breathing gas.

[0058] In one embodiment, the thickening member 222 and the surface of the airbag 221 have a smooth transition, and / or the thickening member 222 and the surface of the tube body 100 have a smooth transition, so that the thickening member 222 has less obstruction to the implantation process, and the thickening member 222 does not increase the discomfort of the patient's throat. In one embodiment, the thickening member 222 and the surface of the tube body 100 have a smooth transition, and the thickening member 222 and the surface of the airbag 221 have a smooth transition, so that after the thickening member 222 is provided, the surface of the mask body 200 remains smooth everywhere, so as to facilitate implantation.

[0059] Reference Figure 2 and Figure 3 In one embodiment, the breathing port 220 is arranged at the front side, the rear side of the laryngeal mask is arched, and a boss 211 is arranged in the breathing chamber 210. The boss 211 has an inclined surface facing the breathing cavity 110 and the breathing port 220, so that when the laryngeal mask is implanted in the patient's throat, the mask body 200 is deformed under the squeezing force of the throat, and the end of the mask body 200 that is first inserted into the throat is moved closer to the inner concave part of the arch, so that the shape of the breathing port 220 changes, and at the same time drives the boss 211 to move closer to the plane where the breathing port 220 is located, so that the mask body 200 is more closely fitted to the opening of the respiratory tract, reducing the dead air space and facilitating the circulation of fresh air; and the setting of the boss 211 makes it possible for the operator to insert the inspection device into the respiratory tract through the breathing chamber 210 during the implantation and ventilation process, and the inclined surface of the boss 211 can guide the inspection device, so that the inspection device can be inserted into the respiratory tract more accurately, reducing the probability of the inspection device poking the respiratory tract wall.

[0060] In one embodiment, the boss 211 and the side wall of the breathing chamber 210 have a smooth transition, so that the boss 211 can guide the inserted inspection device while the inspection device can pass through the connection between the boss 211 and the side wall of the breathing cavity 110 more smoothly, thereby making the inspection device insertion smoother.

[0061] In one embodiment, a chamfer is provided on one side edge of the boss 211 away from the respiratory cavity 110. When the boss 211 approaches the plane where the respiratory port 220 is located under the drive of the deformed mask body 200, the boss 211 may contact the larynx. The chamfer provided on the edge of the boss 211 reduces the stimulation of the larynx by the boss 211 when the boss 211 contacts the larynx, thereby reducing the discomfort caused to the patient by the three-chamber flushable fish-mouth laryngeal mask airway tube.

[0062] In one embodiment, a limiting groove 212 extending from the respiratory cavity 110 to the respiratory port 220 is provided on the boss 211. When the inspection device is inserted from the respiratory cavity 110, the limiting groove 212 can guide and limit the inspection device, so that the inspection device can be inserted into the required position more accurately, and the inspection device is not easy to move at will after insertion, thereby making the implantation ventilation process smoother.

[0063] In one embodiment, a plurality of limiting grooves 212 are arranged at intervals on the boss 211, so that there are more options for the position where the inspection device is inserted, so that the operator can select different limiting grooves 212 according to actual needs.

[0064] In one embodiment, the cross-section of the limiting groove 212 is arc-shaped. Since the inspection device usually includes a cylindrical tubular structure, the limiting groove 212 with an arc-shaped cross-section can fit the inspection device better, so that the limiting groove 212 has a better guiding and limiting effect on the inspection device.

[0065] Reference Figure 2 and Figure 5 In one embodiment, the tube body 100 has a digestive cavity 120, the cover body 200 has a digestive cavity 230 connected to the digestive cavity 120, and the digestive cavity 230 has a digestive port 240 connected to the digestive tract; the digestive cavity 230 includes a first sub-chamber 231 and a second sub-chamber 232, and a connecting passage is provided between the first sub-chamber 231 and the second sub-chamber 232; the rear side wall of the digestive cavity 230 is provided with a circulation port 250 for allowing waste liquid generated during implantation ventilation to enter the digestive cavity 230; the digestive cavity 120 includes a first sub-chamber 121 and a second sub-chamber 122, the first sub-chamber 121 is connected to the first sub-chamber 231, and the second sub-chamber 122 is connected to the second sub-chamber 232, and the first sub-chamber 121 is used for allowing cleaning materials to enter the digestive cavity 230, so as to flush the waste liquid generated during implantation ventilation into the second sub-chamber 122 through the connecting passage and discharge it from the patient's body. That is, the circulation port 250 , the first sub-chamber 231 , the communication channel, the second sub-chamber 232 , and the second sub-chamber 122 form a waste liquid discharge channel.

[0066] It can be understood that, in this embodiment, the tube body 100 further has a breathing cavity 110, the mask body 200 further has a breathing chamber 210 connected to the breathing cavity 110, and the breathing chamber 210 has a breathing port 220 connected to the breathing duct. During the implant ventilation process, respiratory gas enters the respiratory chamber 210 through the respiratory cavity 110, thereby providing respiratory gas for the patient and ensuring that the patient can breathe normally during the implant ventilation process; the first sub-cavity 121 is connected to the suction source and the second sub-cavity 122 is connected to the positive pressure source or connected to the atmosphere, or the second sub-cavity 122 is connected to the suction source and the first sub-cavity 121 is connected to the positive pressure source or connected to the atmosphere, so that during the implant ventilation process, the waste liquid such as saliva, gastric juice and blood produced by the patient first enters the digestive cavity 230 through the circulation port 250 or the digestive port 240 under the action of the suction source, and then is discharged from the patient's body through the first sub-cavity 121 or the second sub-cavity 122 connected to the digestive cavity 230, thereby effectively preventing the waste liquid produced during the implant ventilation process from entering the respiratory tract and causing discomfort to the patient.

[0067] In one embodiment, the circulation port 250 includes a first sub-port 251 and a second sub-port 252, wherein the first sub-port 251 is disposed in the first sub-chamber 231, and the second sub-port 252 is disposed in the second sub-chamber 232. By respectively disposing the first sub-port 251 and the second sub-chamber 232 corresponding to the first sub-chamber 231 and the second sub-chamber 232, the channels for the waste liquid generated during the implantation ventilation process to enter the digestion chamber 230 are increased, thereby more timely discharging the waste liquid generated during the implantation ventilation process from the patient's body.

[0068] In one embodiment, the first sub-cavity 121, the second sub-cavity 122 and the respiratory cavity 110 are arranged parallel to each other, so that the cavity wall of the first sub-cavity 121, the cavity wall of the second sub-cavity 122 and the cavity wall of the respiratory cavity 110 are uniform in thickness at all locations along the length direction of the tube body 100, thereby making the structure of the tube body 100 more stable and not easy to break.

[0069] In one embodiment, the cross-section of the tube body 100 is elliptical, that is, the tube body 100 is a flat tube. On the same cross-section of the tube body 100, the center of the respiratory cavity 110 coincides with the center of the ellipse, and the first sub-cavity 121 and the second sub-cavity 122 are symmetrically arranged on both sides of the respiratory cavity 110. At the same time, the mask body 200 is also flat, and the digestion port 240 is also elliptical, that is, the shape of the digestion port 240 is adapted to the distribution position of the first cavity and the second cavity, so that the waste liquid can be discharged more quickly.

[0070] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A laryngeal mask, characterized in that: include: A tube body, provided with a breathing cavity for circulation of breathing gas and a digestive cavity for circulation of waste liquid generated during implantation ventilation, the tube body having a tube connection end; and, The cover body is provided with a cover connection end, the cover connection end is sealed and connected with the tube connection end, the cover body is provided with a breathing chamber for communicating with the respiratory tract and a digestive chamber for communicating with the digestive tract, the breathing chamber is communicated with the breathing tract, and the digestive chamber is communicated with the digestive tract; A thinning portion is provided at the connection between the cover connection end and the tube connection end, and the wall thickness of the thinning portion is smaller than the wall thickness of the tube body and the rest of the cover body; The breathing chamber is provided with a breathing port, the breathing port is used to communicate with the respiratory tract, and the peripheral ring of the breathing port is provided with an air bag used to seal and abut against the patient's respiratory tract opening; The airbag is provided with a thickening piece, one end of the thickening piece is connected to the tube body, and the other end is connected to the airbag.

2. The laryngeal mask according to claim 1, characterized in that The wall thickness of the thinned portion gradually decreases from one end thereof connected to the tube body to one end thereof connected to the cover body and then gradually increases.

3. The laryngeal mask according to claim 2, characterized in that The outer walls of the cover connecting end and the tube connecting end are smoothly arranged, and the inner walls have a concave portion to form the thinned portion.

4. The laryngeal mask according to claim 1, characterized in that The outer diameter of the thinned portion is smaller than the outer diameter of the tube body and the outer diameter of the cover body.

5. The laryngeal mask according to claim 4, characterized in that The outer diameter of the thinned portion gradually decreases and then gradually increases from one end thereof connected to the tube body to one end thereof connected to the cover body.

6. The laryngeal mask according to claim 1, characterized in that A structural reinforcement portion is provided on the bag wall of the air bag.

7. The laryngeal mask according to claim 6, characterized in that The structural reinforcement portion is disposed at one end of the airbag close to the cover connection end.

8. The laryngeal mask according to claim 7, characterized in that The wall thickness of one end of the airbag close to the cover connecting end is greater than the wall thickness of the remaining parts of the airbag to form the structural reinforcement part.

9. The laryngeal mask according to claim 6, characterized in that The structural reinforcement portion is arranged on the inner wall of the airbag.

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