A laryngeal mask with liquid level sensing

Abstract

This invention discloses a laryngeal mask airway with a liquid level sensor, comprising a tube, a mask body, and a liquid level sensor. The tube has a mask connection end and a digestive cavity for the flow of waste fluid generated during implantation ventilation. The mask body has a tube connection end and a mask implantation end, which are sealed together. The mask body has a digestive chamber communicating with the digestive cavity. The mask body also has a front side facing the respiratory tract and a rear side facing away from the respiratory tract. The digestive chamber has a digestive opening for communication between the digestive chamber and the digestive tract, located near the mask implantation end. The liquid level sensor is located within the digestive chamber to sense the waste fluid level within it. This invention's laryngeal mask airway with a liquid level sensor can sense the liquid level in the digestive chamber to guide its intermittent drainage, reducing harm to the patient and improving patient comfort.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a laryngeal mask with liquid level sensing. Background Technology

[0002] Laryngeal masks, as medical devices used to maintain patients' breathing and ventilation, are widely used in clinical anesthesia, emergency care, and resuscitation due to their non-invasive airway characteristics. With advancements in materials and technology, several improved laryngeal masks are now available for clinical use.

[0003] In related technical fields, in order to facilitate the suctioning out of waste fluids or refluxed gastric fluids generated by patients during surgery, the patient's digestive tract is often connected to a suction device through a laryngeal mask to prevent waste fluids from entering the respiratory cavity and causing suffocation or injury to the patient. However, the suction device continuously suctions the digestive tract connected to the laryngeal mask, which can easily create negative pressure inside the patient and cause harm. At the same time, the suction device will cause the laryngeal mask to vibrate, increasing the patient's discomfort.

[0004] The above content is only used to help understand the technical solution of the invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this invention is to provide a laryngeal mask with a liquid level sensor, which aims to solve the technical problem of damage to patients caused by the continuous suction of the digestive tract connected to the laryngeal mask by the suction device.

[0006] To achieve the above objectives, the present invention proposes a laryngeal mask with liquid level sensing:

[0007] The tube body has a tube connection end, and the cover body is provided with a digestive cavity for the flow of waste fluid generated during implantation ventilation;

[0008] A mask body has opposing tube connection ends and a mask implantation end, the tube connection ends being sealed to the mask connection ends. The mask body has a digestive chamber communicating with the digestive tract. The mask body also has a front side facing the respiratory tract and a rear side facing away from the respiratory tract. The digestive chamber has a digestive opening for communicating with the digestive tract, the digestive opening being located near the mask implantation end.

[0009] A liquid level sensor is disposed within the digestive chamber to sense the waste liquid within the digestive chamber.

[0010] In one embodiment, the liquid level sensor is attached to the inner wall of the digestive chamber and is positioned perpendicular to the respiratory tract along the front-back direction of the hood.

[0011] In one embodiment, the cover is further provided with a breathing chamber for communicating with the respiratory tract. The breathing chamber is located in front of the digestive chamber. One side of the digestive chamber and one side of the breathing chamber share a peripheral wall. The liquid level sensor is disposed on the peripheral wall.

[0012] In one embodiment, the digestive chamber includes a first half-chamber and a second half-chamber, which are disposed opposite to each other on the left and right sides of the respiratory chamber. The first half-chamber and the respiratory chamber share a first sub-peripheral wall, and the second half-chamber and the respiratory chamber share a second sub-peripheral wall. The liquid level sensor is disposed on the first sub-peripheral wall and / or the second sub-peripheral wall.

[0013] In one embodiment, the tube body is further provided with a breathing cavity and a wiring channel. One end of the breathing cavity is connected to the breathing chamber, and the other end is connected to a breathing device for providing breathing gas. The wiring channel is arranged in parallel with the digestive cavity and the breathing cavity, and is located behind the digestive cavity and the breathing cavity.

[0014] In one embodiment, the laryngeal mask with liquid level sensing further includes a temperature sensor located on the outer periphery of the mask, close to the patient, for detecting the patient's body temperature.

[0015] In one embodiment, a metal contact is provided on the outer wall surface of the end of the tube away from the cover, and a cable is provided in the wiring channel. One end of the cable near the cover is connected to the liquid level sensor, and the other end is connected to the metal contact. The metal contact is used to electrically connect to the suction device.

[0016] In one embodiment, the throat mask with liquid level sensing further includes a support member, and the back side of the tube body is provided with a mounting groove. The support member is embedded in the mounting groove, and the outer periphery of the wiring channel communicates with the peripheral wall of the mounting groove.

[0017] In one embodiment, the cross-section of the wiring channel is C-shaped.

[0018] In one embodiment, the digestive cavity includes a first half-cavity and a second half-cavity, both of which are connected to the digestive chamber. The first half-cavity and the second half-cavity are respectively disposed on the left and right sides of the respiratory cavity. The first half-cavity is connected to the first half-chamber, and the second half-cavity is connected to the second half-chamber. A connecting channel is provided between the first half-chamber and the second half-chamber.

[0019] This invention relates to a laryngeal mask airway with a liquid level sensor, comprising a tube, a mask body, and a liquid level sensor. The tube has a mask connection end and a digestive cavity for the flow of waste fluid generated during implantation ventilation. The mask body has a tube connection end and a mask implantation end, which are sealed together. The mask body has a digestive chamber communicating with the digestive cavity. The mask body also has a front side facing the respiratory tract and a rear side facing away from the respiratory tract. The digestive chamber has a digestive opening for communication between the digestive chamber and the digestive tract, located near the mask implantation end. The liquid level sensor is located within the digestive chamber to sense the waste fluid level. By placing a liquid level sensor within the digestive chamber, this application can detect the amount of waste fluid in the digestive chamber in real time. When the waste fluid reaches a certain level, an external suction device is activated to remove the waste fluid, thereby preventing excessive waste fluid from entering the respiratory chamber and preventing continuous suction of the digestive chamber, which could harm the patient. In addition, a preset liquid level value can be set according to actual usage. When the liquid level sensor detects that the waste liquid in the digestive cavity has reached the preset liquid level value, the sensor transmits an electrical signal to the suction device to activate the suction device to suction the waste liquid in the digestive cavity. This improves the automation of waste liquid suction, reduces operation steps and manual labor, and improves work efficiency and patient comfort. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the laryngeal mask with liquid level sensing of the present invention;

[0022] Figure 2 For Figure 1 Rear view of the central laryngeal mask;

[0023] Figure 3 for Figure 2 Sectional view at point AA;

[0024] Figure 4 for Figure 1 Exploded view of the central laryngeal mask;

[0025] Figure 5 for Figure 4 Sectional view at point BB.

[0026] Explanation of icon numbers:

[0027]

[0028]

[0029] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0033] This invention proposes a laryngeal mask with liquid level sensing.

[0034] In embodiments of the present invention, such as Figure 1-5As shown, the laryngeal mask 100 with liquid level sensing includes a tube 10, a mask 20, and a liquid level sensor 30. The tube 10 has a mask connection end 11 and a digestive cavity 12 for the flow of waste fluid generated during implantation ventilation. The mask 20 has a tube connection end 22 and a mask implantation end 21, with the tube connection end 22 sealed to the mask connection end 11. The mask 20 has a digestive chamber 23 communicating with the digestive cavity 12. The mask 20 also has a front side facing the respiratory tract and a rear side facing away from the respiratory tract. The digestive chamber 23 has a digestive opening 24 for communicating with the digestive tract, and the digestive opening 24 is located near the mask implantation end 21. The liquid level sensor 30 is located in the digestive chamber 23 to sense the waste fluid within the digestive chamber 23.

[0035] Specifically, in the embodiments of the present invention, referring to Figure 3 and Figure 4 In this application, the front, back, left, and right sides refer to the laryngeal mask when it is inserted into the human mouth. The left side of the person is the left side of the laryngeal mask, the right side of the person is the right side of the laryngeal mask, the front of the person is the front of the laryngeal mask, and the back of the person is the back of the laryngeal mask. That is, the left side is perpendicular to the paper and faces outwards, and the right side is perpendicular to the paper and faces inwards. In this application, the tube 10 is curved, with the outer side of the curve being the back or rear side, and the inner side being the front or front side.

[0036] In this embodiment of the invention, the laryngeal mask 100 with liquid level sensing includes a mask body 20, which includes a tube connection end 22 and a mask implantation end 21. The mask body 20 gradually tapers from the tube connection end 22 towards the mask connection end 11, thus providing positioning and guidance when the mask body 20 is implanted into the patient's larynx. The mask body 20 is provided with a respiratory chamber 25 and a digestive tract chamber. The respiratory chamber 25 and the digestive tract chamber are arranged adjacent to each other and separated within the mask body 20, which can separate the respiratory tract and digestive tract, preventing digestive waste from entering the respiratory tract and causing patient discomfort. The respiratory chamber 25 is used to connect the patient's respiratory tract to external respiratory equipment, such as a ventilator or oxygen concentrator, etc., which are not specifically limited here. The digestive chamber 23 is connected to the patient's digestive tract through the digestive opening 24, and is used to drain the waste fluid generated when the patient has the laryngeal mask implanted. The digestive chamber 23 can be connected to the external environment and the waste fluid can be drained manually, or it can be connected to a suction device and automatically suctioned by the suction device to reduce the intensity of manual labor.

[0037] In this embodiment of the invention, the laryngeal mask further includes a tube 10, which has a mask connection end 11. The tube 10 is connected to a tube connection end 22 through the mask connection end 11, thereby achieving communication between the tube 10 and the mask 20. The tube 10 contains a respiratory tract 13 and a digestive tract 12. One end of the respiratory tract 13 is connected to the respiratory chamber 25, and the other end is connected to an external respiratory device, thereby pumping oxygen provided by the respiratory device into the patient's respiratory tract through the respiratory chamber 25 connected to the respiratory tract 13 to provide oxygen to the patient. One end of the digestive tract 12 is connected to the digestive chamber 23, and the other end is connected to a suction device or other power device in the external environment to suction out the patient's gastric fluid or waste fluid when the laryngeal mask 100 with liquid level sensing is implanted. The mask 20 and the tube 10 can be integrally injection molded to enhance the connection stability between them. This prevents injury or danger to the patient during insertion, suction, or removal of the laryngeal mask 100 with liquid level sensing, due to unstable connection or weak integration. Alternatively, they can be injection molded separately and then fixedly connected to reduce the complexity of the process and improve production efficiency.

[0038] Specifically, the breathing chamber 25 is provided with a breathing port 251, which is used to communicate with the airway. The periphery of the breathing port 251 is provided with an airbag 29 for sealing against the patient's airway opening. It is understood that by setting the breathing channel 13 on the tube 10 to allow for the flow of breathing gas, and setting the breathing chamber 25 on the mask 20 to communicate with the breathing channel 13, and providing the breathing port 251 on the front side of the breathing chamber 25, when the laryngeal mask 100 with liquid level sensing is implanted into the patient's larynx, the breathing port 251 allows the breathing chamber 25 to communicate with the patient's airway. The airbag 29, located around the periphery of the breathing port 251, can be used to seal against the patient's airway opening, thereby ensuring a seal between the laryngeal mask 100 with liquid level sensing and the larynx, and improving the reliability of the laryngeal mask 100 with liquid level sensing.

[0039] In this embodiment, the laryngeal mask 100 with liquid level sensing further includes a liquid level sensor located within the digestive chamber 23. This sensor senses the liquid level of waste fluid within the digestive chamber 23, allowing for real-time detection of accumulated waste fluid. Once a certain volume of waste fluid is reached, an external suction device is activated to suction the waste fluid from the digestive chamber 23, removing excess fluid from the larynx. This prevents excessive waste fluid buildup from entering the respiratory chamber 25 and affecting the patient's airway, causing discomfort. Simultaneously, it prevents continuous suction, which could create negative pressure within the patient and cause harm due to vibrations from the suction device's mechanical mechanism. Of course, a preset liquid level value can also be preset according to actual use. When the liquid level sensor 30 detects that the waste liquid in the digestive chamber 23 has reached the preset liquid level value, the sensor transmits an electrical signal to the suction device to activate the suction device to suction the waste liquid in the digestive chamber 23. This improves the automation of waste liquid suction, reduces operation steps and manual labor, and improves work efficiency and patient comfort.

[0040] The present invention provides a laryngeal mask 100 with liquid level sensing, comprising a tube 10, a mask 20, and a liquid level sensor 30. The tube 10 has a mask connection end 11 and a digestive cavity 12 for the flow of waste fluid generated during implantation ventilation. The mask 20 has a tube connection end 22 and a mask implantation end 21, which are sealed to each other. The mask 20 has a digestive chamber 23 communicating with the digestive cavity 12. The mask 20 also has a front side facing the respiratory tract and a rear side facing away from the respiratory tract. The digestive chamber 23 has a digestive opening 24 for communicating with the digestive tract, and the digestive opening 24 is located near the mask implantation end 21. The liquid level sensor 30 is located in the digestive chamber 23 to sense the waste fluid in the digestive chamber 23. This application installs a liquid level sensor 30 within the digestive chamber 23. The sensor continuously monitors the volume of waste liquid within the chamber. Once a certain volume is reached, an external suction device is activated to remove the waste liquid, preventing excessive waste liquid from entering the respiratory chamber 25 and avoiding continuous suction from the digestive chamber 23, which could harm the patient. Furthermore, a preset liquid level value can be established based on actual usage. When the liquid level sensor 30 detects that the waste liquid in the digestive chamber 23 has reached the preset value, the sensor sends an electrical signal to the suction device, activating it to suction the waste liquid from the digestive chamber 23. This improves the automation of waste liquid suction, reduces operational steps and manual labor, and increases work efficiency and patient comfort.

[0041] Reference Figure 1 and Figure 5 In one embodiment, the liquid level sensor 30 is attached to the inner wall of the digestive chamber 23 and is positioned perpendicular to the respiratory tract along the front-back direction of the mask 20. It is understood that when the liquid level-sensing tube is inserted into the patient's larynx, the back side of the tube is in close contact with the back side of the patient's larynx, and the waste fluid produced by the patient will rise from the back side of the digestive chamber 23 towards the front. In this embodiment, to better sense the liquid level of the waste fluid in the digestive chamber 23, the liquid level sensor 30 is positioned perpendicular to the respiratory tract along the front-back direction of the mask 20 to improve the accuracy of the waste fluid level sensing. Simultaneously, to reduce the influence of the liquid level sensor 30 on the flow direction of the waste fluid in the digestive chamber 23, the liquid level sensor 30 is attached to the inner wall of the digestive chamber. This simplifies the fixing and installation of the liquid level sensor 30, streamlines the installation process, and improves enterprise efficiency.

[0042] Reference Figure 5 In one embodiment, the cover 20 is further provided with a breathing chamber 25 for communication with the respiratory tract. The breathing chamber 25 is located in front of the digestive chamber 23. One side of the digestive chamber 23 and one side of the breathing chamber 25 share a peripheral wall. The liquid level sensor 30 is disposed on the peripheral wall. It can be understood that the liquid level sensor 30 can be disposed on the peripheral wall of the digestive chamber 23 along the front-back direction to sense the liquid level of the waste liquid in the digestive chamber 23. It can be set as needed. This application describes the embodiment in which the liquid level sensor 30 is disposed on the shared inner wall of the breathing chamber 25 and the digestive chamber 23. Other embodiments can be set with reference to this embodiment, and no special limitation is made here. In this embodiment, the liquid level sensor 30 is disposed on the shared inner wall of the respiratory chamber 25 and the digestive chamber 23. This reduces the risk of damage to the liquid level sensor 30 caused by external factors colliding with it during implantation or transportation. Simultaneously, it also prevents the liquid level sensor 30 from being disposed on the peripheral wall of the digestive chamber 23, away from the respiratory chamber 25, which could affect the deformability of the mask 20 and increase patient discomfort during implantation.

[0043] Specifically, refer to Figure 5The digestive chamber 23 includes a first semi-chamber 231 and a second semi-chamber 232. The first semi-chamber 231 and the second semi-chamber 232 are arranged opposite each other on the left and right sides of the respiratory chamber 25. The first semi-chamber 231 shares a first sub-peripheral wall 26 with the respiratory chamber 25, and the second semi-chamber 232 shares a second sub-peripheral wall 27 with the respiratory chamber 25. The liquid level sensor 30 is disposed on the first sub-peripheral wall 26 and / or the second sub-peripheral wall 27. Optionally, the liquid level sensor 30 may be disposed only on the first sub-peripheral wall 26; or only on the second sub-peripheral wall 27; or the liquid level sensor 30 may be disposed on both the first sub-peripheral wall 26 and the second sub-peripheral wall 27. By simultaneously setting liquid level sensors 30 on the first sub-peripheral wall 26 and the second sub-peripheral wall 27, the liquid level sensors 30 can be calibrated according to the measured liquid level difference, thereby improving the accuracy of liquid level sensing of waste liquid in the first half-chamber 231 and the second half-chamber 232.

[0044] Reference Figure 3 In one embodiment, the tube 10 further includes a breathing chamber 13 and a wiring channel 14. One end of the breathing chamber 13 communicates with the breathing chamber 25, and the other end is connected to a breathing device for providing breathing gas. The wiring channel 14 is arranged parallel to the digestive chamber 12 and the breathing chamber 13, and is located behind the digestive chamber 12 and the breathing chamber 13. It is understood that this is to enable the liquid level sensor 30 to connect to external devices and provide real-time feedback of the data detected by the liquid level sensor 30, so that the external device can determine whether to remove the waste liquid based on a preset value or the rise in liquid level. In this application, to enable the liquid level sensor 30 to connect with the outside, a wiring channel 14 is provided inside the tube body 10. The wiring channel 14 facilitates the effective connection between the liquid level sensor 30 and an external suction device or control device. Furthermore, to simplify the wiring layout of the wiring channel 14, it is located behind the digestive cavity 12 and the respiratory cavity 13, shortening the path of the wiring channel 14 within the cover body 20, reducing changes to the structure of the cover body 20, and improving the stability of the cover body 20 structure. Of course, in other embodiments, the wiring channel 14 can also be located in front of the digestive cavity 12 and the respiratory cavity 13 or arranged side-by-side with them; no special limitation is made here.

[0045] Reference Figure 2In one embodiment, the laryngeal mask 100 with liquid level sensing further includes a temperature sensor located on the outer periphery of the mask 20, close to the patient, for detecting the patient's body temperature. It is understood that, to ensure real-time monitoring of the patient's body temperature during surgery and to improve the accuracy of temperature detection, the laryngeal mask 100 with liquid level sensing described in this application also includes a temperature sensor 40 on the outer periphery of the mask 20. Since the mask 20 is implanted into the patient's larynx, and the outer periphery of the mask 20 is in close contact with the laryngeal wall, the temperature measured through the outer periphery of the mask 20 is the closest possible true body temperature of the patient, while also reducing the influence of external factors on the detected temperature difference and improving the accuracy of the measured temperature.

[0046] Reference Figures 1 to 3 In one embodiment, a metal contact 15 is provided on the outer wall surface of the end of the tube 10 away from the cover 20. A cable 60 is provided in the wiring channel 14. One end of the cable 60 near the cover 20 is connected to the liquid level sensor 30, and the other end is connected to the metal contact 15. The metal contact 15 is used for electrical connection with the suction device. It can be understood that, in order to facilitate the electrical connection between the liquid level sensor 30 or the temperature sensor 40 and the control device, and to reduce the trouble of splicing wires, this application provides a metal contact 15 on the outer wall surface of the end of the tube 10 away from the cover 20. Specifically, the metal contact 15 can be provided on the end face of the end of the tube 10 away from the cover 20 or on the outer peripheral surface of the end of the tube 10 away from the cover 20, without special limitation.

[0047] Reference Figures 2 to 4In one embodiment, the laryngeal mask 100 with liquid level sensing further includes a support member 50. A mounting groove 16 is provided on the back side of the tube 10, and the support member 50 is embedded in the mounting groove 16. The outer periphery of the wiring channel 14 communicates with the peripheral wall of the mounting groove 16. It is understood that, in order to improve the support and plasticity of the laryngeal mask 100 with liquid level sensing, and to prevent excessive deformation during implantation that could lead to inaccurate positioning, a mounting groove 16 is provided on the back side of the tube 10, and the support member 50 is embedded in the mounting groove 16 to enhance the support and plasticity of the tube 10. Simultaneously, to facilitate the placement of the cable 60 within the wiring channel 14, this application also connects the outer periphery of the wiring channel 14 with the peripheral wall of the mounting groove 16, thereby achieving communication between the wiring channel 14 and the mounting groove 16 and simplifying the assembly of the cable 60. During installation, the cable 60 is first installed in the cable routing channel 14, and then the support member 50 is embedded in the mounting groove 16 and fixedly connected to the mounting groove 16. This fixed connection method can be a snap-fit ​​connection or adhesive bonding, etc., and is not specifically limited here. Of course, in other embodiments, the cable 60 can be integrally injection molded with the throat mask 100 with liquid level sensing, saving installation steps and improving assembly efficiency.

[0048] Specifically, the cross-section of the wiring channel 14 is C-shaped. This application configures the wiring channel 14 in a C-shape to communicate with the mounting groove 16. Of course, in other embodiments, the cross-section of the circumferential channel can be circular, rectangular, or irregular, etc., and is not specifically limited here.

[0049] Reference Figure 5In one embodiment, the digestive cavity 12 includes a first half-cavity 121 and a second half-cavity 122, both of which are connected to the digestive chamber 23. The first half-cavity 121 and the second half-cavity 122 are respectively disposed on the left and right sides of the respiratory cavity 13. The first half-cavity 121 is connected to the first half-cavity 231, and the second half-cavity 122 is connected to the second half-cavity 232. A connecting channel is provided between the first half-cavity 231 and the second half-cavity 232. Specifically, the rear wall of the digestive chamber 23 is provided with a circulation port 28 for allowing waste fluid generated during implantation ventilation to enter the digestive chamber 23; the digestive passage 12 includes a first semi-cavity 121 and a second semi-cavity 122, the first semi-cavity 121 communicating with the first semi-cavity 231, and the second semi-cavity 122 communicating with the second semi-cavity 232. The first semi-cavity 121 is used to allow cleaning materials to enter the digestive chamber 23, so that waste fluid generated during implantation ventilation can be flushed into the second semi-cavity 122 through the connecting channel and discharged from the patient's body. That is, the circulation port 28, the first semi-cavity 231, the connecting channel, the second semi-cavity 232, and the second semi-cavity 122 form a waste fluid discharge channel.

[0050] Reference Figure 1 and Figure 2 In one embodiment, the circulation port 28 includes a first sub-port 281 and a second sub-port 282. The first sub-port 281 communicates with the first half-chamber 231, and the second sub-port 282 communicates with the second half-chamber 232. By providing the first sub-port 281 and the second sub-port 282 corresponding to the first half-chamber 231 and the second half-chamber 232 respectively, the channels for waste fluid generated during the implantation ventilation process to enter the digestive chamber 23 are increased, thereby allowing the waste fluid generated during the implantation ventilation process to be discharged from the patient's body more promptly.

[0051] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A laryngeal mask with liquid level sensing, characterized in that, include: The tube body has a cover connection end and is provided with a digestive cavity for the flow of waste fluid generated during implantation ventilation; A mask body has opposing tube connection ends and a mask implantation end, the tube connection ends being sealed to the mask connection ends. The mask body has a digestive chamber communicating with the digestive tract. The mask body also has a front side facing the respiratory tract and a rear side facing away from the respiratory tract. The digestive chamber has a digestive opening for communicating with the digestive tract, the digestive opening being located near the mask implantation end. A liquid level sensor is disposed in the digestive chamber to sense the waste liquid in the digestive chamber; The cover is also provided with a breathing chamber for communicating with the respiratory tract. The breathing chamber is located in front of the digestive chamber. The digestive chamber includes a first half-chamber and a second half-chamber. The first half-chamber and the second half-chamber are arranged opposite each other on the left and right sides of the breathing chamber. The first half-chamber and the breathing chamber share a first sub-peripheral wall, and the second half-chamber and the breathing chamber share a second sub-peripheral wall. The liquid level sensor is disposed on the first sub-peripheral wall and / or the second sub-peripheral wall.

2. The laryngeal mask with liquid level sensing as described in claim 1, characterized in that, The liquid level sensor is attached to the inner wall of the digestive chamber and is positioned perpendicular to the respiratory tract along the front-back direction of the cover. The breathing chamber is provided with a breathing port for communicating with the airway, and the periphery of the breathing port is provided with an airbag for sealing and abutting against the patient's airway opening.

3. The laryngeal mask with liquid level sensing as described in claim 2, characterized in that, The tube body is also provided with a breathing cavity and a wiring channel. One end of the breathing cavity is connected to the breathing chamber, and the other end is connected to a breathing device for providing breathing gas. The wiring channel is arranged in parallel with the digestive cavity and the breathing cavity, and is located behind the digestive cavity and the breathing cavity.

4. The laryngeal mask with liquid level sensing as described in claim 3, characterized in that, The laryngeal mask with liquid level sensing also includes a temperature sensor, which is located on the outer periphery of the mask and close to the patient to detect the patient's body temperature.

5. The laryngeal mask with liquid level sensing as described in claim 4, characterized in that, The outer wall surface of the tube body away from the cover is provided with a metal contact. A cable is provided in the wiring channel. One end of the cable near the cover is connected to the liquid level sensor, and the other end is connected to the metal contact. The metal contact is used to electrically connect to the suction device.

6. The laryngeal mask with liquid level sensing as described in claim 5, characterized in that, The throat mask with liquid level sensing also includes a support member. The back side of the tube body is provided with a mounting groove, and the support member is embedded in the mounting groove. The outer periphery of the wiring channel is connected to the peripheral wall of the mounting groove.

7. The laryngeal mask with liquid level sensing as described in claim 6, characterized in that, The cross-section of the wiring channel is C-shaped.

8. The laryngeal mask with liquid level sensing as described in claim 3, characterized in that, The digestive cavity includes a first half-cavity and a second half-cavity, both of which are connected to the digestive chamber. The first half-cavity and the second half-cavity are respectively located on the left and right sides of the respiratory cavity. The first half-cavity is connected to the first half-cavity, and the second half-cavity is connected to the second half-cavity. A connecting channel is provided between the first half-cavity and the second half-cavity.

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