CN215231312U

CN215231312U - High-sealing dual-drainage laryngeal mask

Info

Publication number: CN215231312U
Application number: CN202121350115.5U
Authority: CN
Inventors: 伍金红; 李文献; 贾继娥; 李卫星
Original assignee: Eye and ENT Hospital of Fudan University
Current assignee: Eye and ENT Hospital of Fudan University
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-12-21
Anticipated expiration: 2031-06-17

Abstract

The utility model provides a high-tightness dual-drainage laryngeal mask, which comprises a laryngeal mask body, a breather pipe, a stomach tube drainage channel and a gas drainage channel, wherein a ventilation cavity is formed on the laryngeal mask body, the breather pipe is arranged on the side wall of the laryngeal mask body, and the breather pipe is communicated with the ventilation cavity; the stomach tube drainage channel and the gas drainage channel both penetrate into the laryngeal mask body from one side of the connection of the ventilation pipe and the laryngeal mask body, the stomach tube drainage channel and the gas drainage channel both penetrate out from the other side of the laryngeal mask body, the stomach tube drainage channel is provided with a gastric juice drainage port on the side wall of the laryngeal mask body, and the gas drainage channel is provided with a gas drainage port on the side wall of the laryngeal mask body. Through inserting the stomach tube into the liquid of patient's stomach from stomach tube drainage channel, insert the gas of patient's esophagus department into the patient from gas drainage channel with the blast pipe and carry out the drainage, reduced and leaked into the gas entering patient's stomach of esophagus from the laryngeal mask front end, and then reduced the emergence of complication.

Description

High-sealing dual-drainage laryngeal mask

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a high-tightness dual drainage laryngeal mask.

Background

When general anesthesia operation is performed, auxiliary respiration is needed to be performed on an operation patient so as to keep the general anesthesia hemodynamics of the patient stable, and common auxiliary respiratory ventilation devices comprise a tracheal tube ventilation device and a laryngeal mask respiratory ventilation device. The laryngeal mask belongs to a supraglottic ventilation device, and is an effective means for establishing a safe airway in general anesthesia operation.

With the development of science and technology, the operation environment is more complex in order to adapt. At present, a double-tube laryngeal mask exists on the market, and one pipeline of the double-tube laryngeal mask is used for the penetration of a stomach tube.

The current chinese patent that publication number is CN206167555U discloses a novel double-barrelled laryngeal mask, it is mainly by the cover body, the breather pipe, stomach tube drainage channel and gasbag pressure indicating device constitute, the cover body comprises cup and gasbag, there is gas outlet at the breather pipe lower extreme, there is breathing circuit interface on the upper end, there is stomach tube drainage channel in the breather pipe lumen, stomach tube drainage channel upper end opening is stomach tube drainage entry, the lower extreme opening is stomach tube drainage export, gasbag pressure indicating device comprises instruction gasbag and check valve, cup lower part constriction forms the tongue end, no gasbag covers, the end is stomach tube drainage export.

The inventor thinks that after inserting the stomach tube, stomach tube drainage channel is sealed to double-barrelled laryngeal mask among the prior art, and double-barrelled laryngeal mask is lower when using the sealing pressure, and gas spills from the laryngeal mask cup during mechanical ventilation, leaks then to get into the esophagus to the front end, and the gas that gets into the esophagus directly gets into in the stomach after more, and then arouses backward flow and mistake easily to inhale, exists and treats the improvement.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims at providing a high-tightness dual-drainage laryngeal mask.

According to the utility model, the high-tightness dual-drainage laryngeal mask comprises a laryngeal mask body, a ventilation pipe, a stomach tube drainage channel and a gas drainage channel, wherein a ventilation cavity is formed on the laryngeal mask body, one side of the ventilation cavity is in an open arrangement, the ventilation pipe is arranged on the side wall of the laryngeal mask body, and the ventilation pipe is communicated with the ventilation cavity; the stomach tube drainage channel and the gas drainage channel both penetrate into the laryngeal mask body from one side of the connection of the breather pipe and the laryngeal mask body, the stomach tube drainage channel and the gas drainage channel both penetrate out from the other side of the laryngeal mask body, the stomach tube drainage channel is provided with a gastric juice drainage port on the side wall of the laryngeal mask body, and the gas drainage channel is provided with a gas drainage port on the side wall of the laryngeal mask body.

Preferably, both the gastric tube drainage channel and the gas drainage channel penetrate into the ventilation tube outside the laryngeal mask body and into the laryngeal mask body along the direction of the ventilation tube.

Preferably, the stomach tube drainage channel and the gas drainage channel are communicated with each other at one side of the adjacent arrangement, and the tube wall of the stomach tube drainage channel is fixedly connected with the tube wall of the gas drainage channel.

Preferably, the laryngeal mask body includes a narrowed end, the outer wall of the narrowed end is arc-shaped, and the gastric juice drainage port and the gas drainage port are both located at the end of the narrowed end.

Preferably, a first cavity is formed in the narrowed end, the first cavity communicating with a vent lumen.

Preferably, the cross-section of the gastric tube drainage channel and the cross-section of the gas drainage channel both comprise a circle, and the size of the cross-section of the gastric tube drainage channel is larger than that of the cross-section of the gas drainage channel.

Preferably, a flexible sealing sheet is arranged on the laryngeal mask body from which the ventilation cavity opens.

Preferably, the laryngeal mask body comprises a back plate and a sealing air bag, the sealing air bag is fixedly arranged on the back plate, the opening of the ventilation cavity is located on one side, away from the back plate, of the ventilation cavity, and the sealing air bag is communicated with an air bag pressure indicating device.

Preferably, the balloon pressure indicating device comprises a conduit, an indicating balloon and a check valve, the indicating balloon is communicated with the sealing balloon through the conduit, the indicating balloon is provided with an air inlet, and the check valve is installed at the air inlet of the indicating balloon.

Preferably, the laryngeal mask body comprises a back plate and a silica gel wall, the silica gel wall is tightly arranged on the back plate, and the opening of the ventilation cavity is located on one side of the ventilation cavity, which is far away from the back plate.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model can insert the stomach tube into the patient from the stomach tube drainage channel and drain the liquid in the stomach of the patient through the stomach tube drainage channel and the gas drainage channel which are arranged on the laryngeal mask body, and can also insert the exhaust pipe into the patient from the gas drainage channel and drain the gas in the esophagus of the patient, thereby being beneficial to reducing the gas which leaks into the esophagus from the front end of the laryngeal mask and enters the stomach of the patient, and further being beneficial to reducing the occurrence of complications;

2. the utility model arranges the narrowing end for blocking the esophagus opening at the front end of the laryngeal mask and arranges the first cavity in the narrowing end, which is helpful to improve the tightness of the fit between the front end of the laryngeal mask and the esophagus opening of the patient, thereby being helpful to reduce the gas leakage into the esophagus of the patient;

3. the utility model discloses a penetrate the breather pipe with stomach tube drainage channel and gaseous drainage channel and penetrate this internally of laryngeal mask along the trend of breather pipe, help improving laryngeal mask overall structure's compactedness, and then help reducing the volume of laryngeal mask, and convenient to use.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic view of the overall structure of the front end of the laryngeal mask of the present invention;

FIG. 2 is a schematic side view of the overall structure of the laryngeal mask of the present invention;

fig. 3 is a schematic side view of the overall structure of the laryngeal mask according to variation 1 of the present invention.

Reference numerals:

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

As shown in fig. 1 and 2, according to the utility model provides a pair of high leakproofness dual drainage laryngeal mask, including laryngeal mask body 1, breather pipe 2, stomach tube drainage channel 101 and gas drainage channel 102, laryngeal mask body 1 has certain ductility, is formed with on the laryngeal mask body 1 and ventilates chamber 11, and the lateral wall of ventilating chamber 11 week side all is the shrink setting inwards from its one side that deviates from the uncovered opening of ventilating chamber 11 to its one side that is close to the uncovered opening of ventilating chamber 11. The laryngeal mask body 1 on the opening periphery side of the ventilation cavity 11 is integrally formed with a flexible sealing sheet 3, and the flexible sealing sheet 3 extends towards the middle of the ventilation cavity 11 from bottom to top.

The gastric tube drainage channel 101 and the gas drainage channel 102 are both connected to the laryngeal mask body 1, a gastric juice drainage port 103 is formed on the side wall of the laryngeal mask body 1 of the gastric tube drainage channel 101, and a gas drainage port 104 is formed on the side wall of the laryngeal mask body 1 of the gas drainage channel 102.

As shown in fig. 2, a narrowing end 4 is integrally formed at one end of the laryngeal mask body 1, the outer walls of the narrowing end 4 are arc-shaped, a first cavity 41 is formed in the narrowing end 4, and the first cavity 41 is communicated with the ventilation cavity 11. When laryngeal mask body 1 is in operating position, the narrowing end 4 is located patient's esophagus mouth department, when ventilating cavity 11 in fill gas, because first cavity 41 and the chamber 11 intercommunication of ventilating, the outer wall of narrowing end 4 outwards expands under the effect of the inside atmospheric pressure of first cavity 41, thereby make the outer wall of narrowing end 4 and the laminating of the lateral wall mucosa of patient's food and oral cavity, and then with the help of narrowing end 4 with the esophagus shutoff of patient, it causes palirrhea mistake absorbing's the condition to take place to have reduced gas leakage esophagus and stomach, and then reduced the emergence of clinical complication.

As shown in fig. 2, the external contour of the laryngeal mask body 1 is arc-shaped, a bulge part 5 is formed on the upper side of the middle part of the laryngeal mask body 1 at the opening of the ventilation cavity 11, the bulge part 5 is connected with the two ends of the laryngeal mask body 1 in the length direction through arc surfaces, and the distance between the bulge part 5 and the outer edge of the narrowing end 4 is one half to two thirds of the length of the laryngeal mask body 1, preferably two thirds of the length of the laryngeal mask body 1. According to the shape characteristic of the pharyngeal structure of the human body, the bulge part 5 arranged at the half to two thirds of the length of the laryngeal mask body 1 improves the attaching area of the outer wall of the laryngeal mask body 1 and the inner wall of the pharyngeal portion of the patient, helps to reduce the attaching gap between the laryngeal mask body 1 and the inner wall of the pharyngeal portion of the patient, and improves the tightness of the sealing of the glottis combining part of the laryngeal mask body 1 and the patient.

As shown in fig. 2, the ventilation tube 2 is a flexible plastic tube, the joint of the ventilation tube 2 and the laryngeal mask body 1 is located on the side wall of the laryngeal mask body 1 far away from the narrowing end 4, a second cavity 12 is formed at the joint of the ventilation tube 2 and the side wall of the ventilation cavity 11, and the second cavity 12 is communicated with the ventilation cavity 11. When the breather pipe 2 aerifys the breather chamber 11, the lateral wall of second cavity 12 outwards expands under the effect of the atmospheric pressure in the second cavity 12, has improved the laminating area of oral mucosa around laryngeal mask body 1 and the patient glottis, and through installing breather pipe 2 on the lateral wall of laryngeal mask body 1, has reduced the oppression to patient's pharynx when the laryngeal mask work, can effectually reduce the incidence of patient's pharyngalgia after the operation.

As shown in fig. 2, both the gastric tube drainage channel 101 and the gas drainage channel 102 are flexible plastic tubes, and both the gastric tube drainage channel 101 and the gas drainage channel 102 penetrate the ventilation tube 2 outside the laryngeal mask body 1, then penetrate the inside of the laryngeal mask body 1 along the trend of the ventilation tube 2, then sequentially penetrate the second cavity 12, the ventilation cavity 11 and the first cavity 41, and are matched with the end part of the narrowing end 4 to form a gastric juice drainage port 103 and a gas drainage port 104.

The cross sections of the gastric tube drainage channel 101 and the gas drainage channel 102 are both circular, and the size of the cross section of the gastric tube drainage channel 101 is larger than that of the cross section of the gas drainage channel 102. Stomach tube drainage channel 101 and gas drainage channel 102 are the mutual intercommunication of one side of adjacent setting, have improved drainage efficiency, have increased the drainage space, and are located the pipe wall of stomach tube drainage channel 101 and the pipe wall of gas drainage channel 102 of laryngeal mask body 1 and pass through glue fastening connection.

In practice, the practitioner places the laryngeal mask in the patient's laryngeal region with the open mouth of the ventilation lumen 11 facing the patient's glottis and the narrowed end 4 in the patient's esophageal orifice. When the vent pipe 2 inflates the vent cavity 11, the narrowing end 4 expands and seals the alimentary canal orifice of the patient, so that the condition that gas enters the stomach of the patient from the alimentary canal orifice is reduced. And the staff inserts the stomach tube through stomach tube drainage channel 101 and carries out the drainage to the liquid of patient's stomach, inserts the trachea through gas drainage channel 102 and carries out the drainage to the gas that leaks into in the patient's esophagus, and it is in the patient's stomach to reduce gas entering to reduce the emergence of complication.

The thickness of the side wall of the ventilation cavity 11 is gradually reduced from bottom to top, and when the ventilation cavity 11 is inflated, the side wall of the upper part of the ventilation cavity 11 has larger deformation relative to the side wall of the lower part of the ventilation cavity 11, so that the lower side wall of the ventilation cavity 11 has certain stability, and the side wall of the upper part of the ventilation cavity 11 has enough deformation. The side walls on both sides in the width direction of the vent chamber 11 are slightly inclined toward the middle of the vent chamber 11. In operation, the breather pipe 2 is aerifyd in to the chamber of ventilating 11, and the lateral wall of the chamber of ventilating 11 opens under the effect of atmospheric pressure, and then makes the lateral wall of the chamber of ventilating 11 and the laminating of the oral mucosa around the patient's glottis, has improved the sealed compactness of laryngeal mask body 1 and patient's glottis joint part.

Furthermore, the edge track of the flexible sealing sheet 3 is approximately parallel to the edge track of the opening of the ventilation cavity 11, the flexible sealing sheet 3 is a thin silicon sheet, and under the action of air pressure in the ventilation cavity 11, the flexible sealing sheet 3 expands upwards, so that the attaching area of the glottis joint part of the laryngeal mask body 1 and the patient is increased, and the sealing effect is improved. And the side wall of the ventilation cavity 11 plays a supporting role for the flexible sealing sheet 3, so that wrinkles generated in the process of circularly increasing or reducing the air pressure in the ventilation cavity 11 by the flexible sealing sheet 3 are reduced, and the tightness of the sealing of the glottis joint of the laryngeal mask body 1 and the patient is further ensured.

As shown in fig. 2, the laryngeal mask body 1 comprises a back plate 6 and a sealing air bag 7, wherein the back plate 6 is a one-piece silica gel flat plate and has certain ductility, the sealing air bag 7 is fixedly mounted on one side of the back plate 6 through glue, and when the ventilation tube 2 inflates the ventilation cavity 11, the sealing air bag 7 expands outwards under the action of air pressure in the ventilation cavity 11. On the one hand, the sealing air bag 7 serves as the side wall of the ventilation cavity 11, provides an installation foundation for the flexible sealing sheet 3 and plays a supporting role, and on the other hand, the sealing air bag 7 is inflated and expanded to increase the attaching area of the laryngeal mask and oral mucosa around the glottis of a patient, so that the tightness of the sealing of the laryngeal mask and the glottis joint part is improved.

The balloon pressure indicating device 8 is communicated with the sealed balloon 7, the balloon pressure indicating device 8 comprises a conduit 81, an indicating balloon 82 and a check valve 83, the indicating balloon 82 is communicated with the sealed balloon 7 through the conduit 81, and the conduit 81 is installed on the side wall of the breather pipe 2. An air inlet is integrally formed in the indicating air bag 82, and a check valve 83 is installed at the air inlet of the indicating air bag 82. By inflating the airbag 7 with the indicator bag 82 and detecting the air pressure of the airbag 7, the occurrence of the gas in the indicator bag 82 and the airbag 7 flowing out from the inlet of the indicator bag 82 is reduced by the check valve 83 attached to the inlet of the indicator bag 82.

Modification example 1

As shown in fig. 3, the laryngeal mask body 1 includes a back plate 6 and a silicone wall 9, the back plate 6 is a one-piece silicone flat plate and has a certain ductility, the silicone wall 9 is fixedly mounted on one side of the back plate 6 through glue or integrated molding, and when the ventilation tube 2 inflates air into the ventilation cavity 11, the silicone wall 9 expands outwards under the action of the air pressure in the ventilation cavity 11. Silica gel wall 9 is as the lateral wall of chamber 11 of ventilating on the one hand, provides the installation basis and plays the supporting role for flexible sealing piece 3, and on the other hand, silica gel wall 9 outwards expands under the effect of chamber 11 internal gas pressure of ventilating and has increased the laminating area of laryngeal mask and the oral mucosa around the patient's glottis, has improved the sealed compactness of laryngeal mask and patient's glottis joint portion.

Principle of operation

In operation, a worker puts the laryngeal mask into the throat part of a patient from the oral cavity of the patient, and the open mouth of the ventilation cavity 11 is opposite to the glottis of the patient, and the narrow end 4 is positioned at the esophagus inlet of the patient; then, a worker fills gas into the ventilation cavity 11 through the ventilation pipe 2, the air pressure in the ventilation cavity 11 is increased, the side wall of the ventilation cavity 11 and the flexible sealing sheet 3 are both expanded outwards and attached to the oral mucosa at the glottis of a patient, and the sealing tightness of the combination part of the laryngeal mask body 1 and the glottis of the patient is improved; and the narrowing end 4 expands under the action of the air pressure in the first cavity 41 and plugs the esophagus of the patient, so that the occurrence of reflux and aspiration caused by the fact that air leaks into the esophagus and the stomach is reduced, a stomach tube is inserted through the stomach tube drainage channel 101 to conduct drainage on liquid in the stomach of the patient, an air tube is inserted through the air drainage channel 102 to conduct drainage on the air leaking into the esophagus of the patient, the air entering the stomach of the patient is reduced, and therefore the occurrence of complications is reduced.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. The high-sealing dual-drainage laryngeal mask is characterized by comprising a laryngeal mask body (1), a ventilation pipe (2), a gastric tube drainage channel (101) and a gas drainage channel (102), wherein a ventilation cavity (11) is formed in the laryngeal mask body (1), one side of the ventilation cavity (11) is arranged in an open mode, the ventilation pipe (2) is arranged on the side wall of the laryngeal mask body (1), and the ventilation pipe (2) is communicated with the ventilation cavity (11);

stomach tube drainage channel (101) and gas drainage channel (102) both penetrate into laryngeal mask body (1) from one side that breather pipe (2) and laryngeal mask body (1) are connected, both stomach tube drainage channel (101) and gas drainage channel (102) are worn out from the opposite side of laryngeal mask body (1), just stomach tube drainage channel (101) are formed with gastric juice drainage mouth (103) on the lateral wall of laryngeal mask body (1), gas drainage channel (102) are formed with gas drainage mouth (104) on the lateral wall of laryngeal mask body (1).

2. The high-sealing double drainage laryngeal mask according to claim 1, characterised in that both the gastric tube drainage channel (101) and the gas drainage channel (102) penetrate into the ventilation tube (2) outside the laryngeal mask body (1) and into the laryngeal mask body (1) along the direction of the ventilation tube (2).

3. The high-sealing double-drainage laryngeal mask according to claim 1, wherein the stomach tube drainage channel (101) and the gas drainage channel (102) are communicated with each other at the side where they are adjacently arranged, and the tube wall of the stomach tube drainage channel (101) is tightly connected with the tube wall of the gas drainage channel (102).

4. The high-sealability double-drainage laryngeal mask according to claim 1, characterised in that the laryngeal mask body (1) comprises a narrowed end (4), the outer wall of the narrowed end (4) is arc-shaped, and the gastric juice drainage port (103) and the gas drainage port (104) are both located at the end of the narrowed end (4).

5. The high-sealing double drainage laryngeal mask according to claim 4, characterised in that a first cavity (41) is formed in the narrowed end (4), said first cavity (41) communicating with the ventilation lumen (11).

6. The high-sealing dual drainage laryngeal mask according to claim 1, characterised in that the cross-section of both the gastric tube drainage channel (101) and the gas drainage channel (102) comprises a circular shape and the size of the cross-section of the gastric tube drainage channel (101) is larger than the size of the cross-section of the gas drainage channel (102).

7. The high-sealing double-drainage laryngeal mask according to claim 1, characterised in that a flexible sealing sheet (3) is arranged on the laryngeal mask body (1) from which the ventilation cavity (11) opens.

8. The high-sealing dual-drainage laryngeal mask according to claim 1, characterised in that the laryngeal mask body (1) comprises a back plate (6) and a sealing air bag (7), the sealing air bag (7) is tightly arranged on the back plate (6), the opening of the ventilation cavity (11) is located on the side, away from the back plate (6), of the ventilation cavity (11), and an air bag pressure indicating device (8) is communicated with the sealing air bag (7).

9. The high-sealability double-drainage laryngeal mask according to claim 8, characterised in that the balloon pressure indicating means (8) comprises a catheter (81), an indicating balloon (82) and a check valve (83), the indicating balloon (82) is communicated with the sealing balloon (7) through the catheter (81), the indicating balloon (82) is provided with an air inlet, and the check valve (83) is installed at the air inlet of the indicating balloon (82).

10. The high-sealing double-drainage laryngeal mask according to claim 1, characterised in that the laryngeal mask body (1) comprises a back plate (6) and a silicone wall (9), the silicone wall (9) is arranged on the back plate (6) in a fastened manner, and the opening of the ventilation cavity (11) is located on the side of the ventilation cavity (11) facing away from the back plate (6).