CN210813275U

CN210813275U - Anti-backflow laryngeal mask

Info

Publication number: CN210813275U
Application number: CN201921040495.5U
Authority: CN
Inventors: 张瑜; 刘洪珍; 李世杰; 李露君; 赖晓红; 章绵华; 罗雁平; 梁顺萍
Original assignee: Foshan First Peoples Hospital Foshan Hospital Sun Yat Sen University
Current assignee: Foshan First Peoples Hospital Foshan Hospital Sun Yat Sen University
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-06-23
Anticipated expiration: 2029-07-04

Abstract

The utility model discloses an anti-backflow laryngeal mask, which comprises a breather pipe and a draft tube which are connected and installed side by side, wherein a back plate is fixedly arranged at the lower part of the breather pipe, the periphery of the back plate extends to form a covering bag, the lower part of the draft tube penetrates through and extends out of the covering bag to form an extending part, an esophagus airbag is arranged on the peripheral wall of the extending part in a ring manner, and the covering bag and the esophagus airbag are respectively connected and provided with a first inflation device and a second inflation device; the upper portion of breather pipe and the upper portion of honeycomb duct are connected side by side and are formed the portion side by side, be equipped with laryngeal mask fixing device in the portion side by side, both ends are connected respectively and are equipped with the connecting band about laryngeal mask fixing device, and two connecting bands are connected respectively and are equipped with left ear-hang, right ear-hang. The utility model has simple structure and convenient use, can effectively prevent the occurrence of backflow and aspiration when ventilating the patient during anesthesia and emergency treatment, improves the stability and the safety of the laryngeal mask, and reduces the labor intensity of medical care personnel.

Description

Anti-backflow laryngeal mask

Technical Field

The utility model relates to the technical field of medical equipment, especially a prevent anti-refluence laryngeal mask.

Background

The laryngeal mask airway is an artificial airway frequently used in emergency resuscitation, general anesthesia and other processes in modern clinic, and is mainly used for keeping the airway smooth and ensuring the ventilation and oxygenation of patients. The laryngeal mask commonly used clinically can be divided into a single-cavity laryngeal mask and a double-cavity laryngeal mask, and at present, for the double-cavity laryngeal mask, the laryngeal mask is characterized in that a channel outlet is designed at the front end of a laryngeal mask inflatable bag, after the laryngeal mask is placed in the laryngeal mask, a gastric tube is inserted from the channel to lead out reflux liquid, but the inflatable mask of the double-cavity laryngeal mask has poor sealing and barrier capabilities on the esophagus, so that the phenomenon of the backflow of gastric juice can not be effectively avoided when the gastric tube is not placed. In addition, current medical laryngeal mask of double-chamber type, when using, insert patient's laryngeal cavity with it after, need special medical personnel to hand and fix it in personnel's laryngeal cavity, not only cause medical personnel's working strength great like this to it is easy tired and take place to hand fixedly unstably to hold for a long time, easily shifts, influences stability and the security that the laryngeal mask used, increases patient and uses the painful sense of laryngeal mask.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the anti-reflux laryngeal mask can effectively prevent reflux and aspiration when a patient is ventilated during anesthesia and emergency treatment, improve the stability and safety of the laryngeal mask in use and reduce the labor intensity of medical staff.

The utility model provides a solution of its technical problem is:

a backflow prevention laryngeal mask comprises a vent pipe and a flow guide pipe which are connected and installed side by side, wherein a back plate is fixedly arranged at the lower part of the vent pipe, the periphery of the back plate extends to enclose a mask bag, the lower part of the flow guide pipe penetrates through and extends out of the mask bag to form a protruding part, an esophagus air bag is annularly arranged on the outer peripheral wall of the protruding part, and the mask bag and the esophagus air bag are respectively connected and provided with a first inflation device and a second inflation device; the upper portion of breather pipe and the upper portion of honeycomb duct are connected side by side and are formed the portion side by side, be equipped with laryngeal mask fixing device in the portion side by side, both ends are connected respectively and are equipped with the connecting band about laryngeal mask fixing device, and two connecting bands are connected respectively and are equipped with left ear-hang, right ear-hang.

As a further improvement of the above technical scheme, the laryngeal mask fixing device comprises a stud and a nut, wherein a through hole is formed in the middle of the stud, the through hole and the stud are coaxially arranged, the side-by-side parts penetrate through the through hole, the stud and the side-by-side parts are fixedly connected, the nut is in threaded connection with the stud, and the two connecting bands are respectively connected with the left end and the right end of the nut.

As a further improvement of the above technical scheme, the first inflation device and the second inflation device are members with the same structure, the first inflation device comprises an inflation tube, one end of the inflation tube is connected with an inner cavity of the mask sac, and the other end of the inflation tube is sequentially provided with an indication sac and a one-way valve.

As a further improvement of the technical scheme, the vent pipe and the guide pipe are provided with bent parts at positions close to the cover bag, and the included angle of the bent parts is 90-130 degrees.

As a further improvement of the above technical solution, the connecting band is an elastic band.

As a further improvement of the technical scheme, the vent pipe, the flow guide pipe, the covering bag and the esophagus air bag are all made of non-toxic PVC materials.

As a further improvement of the technical proposal, the length of the extension part ranges from 3cm to 5 cm.

The utility model has the advantages that: the utility model provides an anti-reflux laryngeal mask, during the use, put into patient's throat portion laryngeal mask, hang left ear hook, right ear hook on patient's left ear and right ear respectively again, fix laryngeal mask and patient's ear, thereby improved stability and security that the laryngeal mask used, reduce medical personnel's intensity of labour, and the extension of honeycomb duct has got into patient's esophagus at this moment, inflate the esophagus gasbag through the second aerating device first to seal the esophagus, and then inflate the mask pocket through the first aerating device, even if not lower stomach tube also can prevent gastric juice from returning and overflowing; the utility model has simple structure and convenient use, can effectively prevent the occurrence of backflow and aspiration when ventilating the patient during anesthesia and emergency treatment, improves the stability and the safety of the laryngeal mask, and reduces the labor intensity of medical care personnel.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is a schematic structural diagram of the present embodiment.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1, the anti-backflow laryngeal mask comprises a vent tube 100 and a flow guide tube 110 which are connected and installed side by side, wherein a back plate 101 is fixedly arranged at the lower part of the vent tube 100, the periphery of the back plate 101 extends to enclose a mask pocket 102, the lower part of the flow guide tube 110 penetrates through and extends out of the mask pocket 102 to form a protruding part 111, an esophagus air bag 112 is annularly arranged on the outer peripheral wall of the protruding part 111, and the mask pocket 102 and the esophagus air bag 112 are respectively connected and provided with a first inflation device 120 and a second inflation device 121; the upper portion of breather pipe 100 and the upper portion of honeycomb duct 110 are connected side by side and are formed the portion side by side, be equipped with laryngeal mask fixing device in the portion side by side, both ends are connected respectively and are equipped with connecting band 133 about laryngeal mask fixing device, and two connecting bands 133 are connected respectively and are equipped with left ear hanger 134, right ear hanger 135. When the laryngeal mask is used, the laryngeal mask is placed in the throat of a patient, the left ear hook 134 and the right ear hook 135 are respectively hung on the left ear and the right ear of the patient, the laryngeal mask and the ear of the patient are fixed, so that the stability and the safety of the laryngeal mask are improved, the labor intensity of medical workers is reduced, the extending part 111 of the guide tube 110 enters the esophagus of the patient at the moment, the esophagus air bag 112 is inflated through the second inflation device 121 to seal the esophagus, the mask bag 102 is inflated through the first inflation device 120, gastric juice can be prevented from overflowing even if a stomach tube is not taken down, and the air tube 100 is connected with a breathing machine to perform manual ventilation on the patient. Because the esophagus is effectively sealed by the cover bag 102 and the esophagus air bag 112, if gastric juice overflows during use, the gastric juice can be discharged or pumped out through the flow guide tube 110, so that any worry that the gastric juice leaks into the air passage is avoided, and the phenomenon that gas leaks into the esophagus to cause flatulence during artificial ventilation due to poor air bag sealing can be avoided. The esophageal balloon 112 has a spherical, ellipsoidal, cylindrical or truncated cone-shaped configuration.

Further as a preferred embodiment, the laryngeal mask fixing device comprises a stud 131 and a nut 132, a through hole is formed in the middle of the stud 131, the through hole and the stud 131 are coaxially arranged, the parallel part penetrates through the through hole, the stud 131 is fixedly connected with the parallel part, the nut 132 is screwed with the stud 131, and two connecting bands 133 are respectively connected to the left end and the right end of the nut 132. In order to facilitate the connection between the ventilation tube 100 and the ventilator, the ventilation tube 100 is generally provided with a connector, the inner diameter of the nut 132 is larger than the sum of the diameters of the connector and the flow guide tube 110, when in use, the nut 132 can be sleeved and penetrated through the ventilation tube 100 and the flow guide tube 110 at the same time, the nut 132 is screwed with the stud 131 in a threaded manner, the nut 132 can be screwed to a proper position according to the condition of a patient, then the left ear hanger 134 and the right ear hanger 135 are respectively hung on the left ear and the right ear of the patient, the laryngeal mask is fixed with the ear of the patient, and the nut 132 cannot slide back and forth on the stud 131. In order to prevent the air duct 100 and the flow guide tube 110 from being bitten or bitten by a patient, a detachable bite block can be further arranged, the position of the bite block is positioned below the laryngeal mask fixing device, and the bite block can be detached as required in clinical use, so that the operation of medical personnel is facilitated.

Further as a preferred embodiment, the first inflation device 120 and the second inflation device 121 are structural members having the same structure, the first inflation device 120 includes an inflation tube 122, one end of the inflation tube 122 is connected to the inner cavity of the mask bag 102, and the other end of the inflation tube 122 is sequentially provided with an indication bubble 123 and a one-way valve 124. When in use, after the laryngeal mask is placed into the throat of a patient to be positioned by a doctor, air is injected into the mask sac 102 from the one-way valve 124 by using an empty needle, the indicating vesicle 123 is inflated, and the mask sac 102 is also inflated. The first and

second inflators

120 and 121 are identical in structure, and the esophageal balloon 112 is inflated by a principle similar to that of the covering bag 102. When the laryngeal mask needs to be taken out, the air in the mask sac 102 and the esophagus air bag 112 is released, and then the left ear hook 134 and the right ear hook 135 are loosened, so that the laryngeal mask can be smoothly pulled out.

In a further preferred embodiment, the air duct 100 and the flow guide tube 110 have a curved portion near the shroud 102, and the included angle of the curved portion is 90 ° to 130 °. The positions of the vent pipe 100 and the draft tube 110, which are close to the mask sac 102, are provided with bending parts, the included angle of the bending parts is 90-130 degrees, the included angle accords with the physiological angle of the throat and the oral cavity of the human laryngopharynx part, the positioning can be rapidly carried out in the using process, the intubation time is shortened, and the pain of a patient is reduced.

Further, in a preferred embodiment, the connecting band 133 is an elastic band. The connecting band 133 is an elastic band, which is good in elasticity and is convenient for the left ear hook 134 and the right ear hook 135 to be worn.

Further in a preferred embodiment, the ventilation tube 100, the drainage tube 110, the mask 102 and the esophageal balloon 112 are made of non-toxic PVC material. The laryngeal mask is made of non-toxic PVC materials, is low in manufacturing cost, can be used for one time in clinic, can be used for patients with routine operations, and can also be used as an emergency airway processing device for patients with trachea cannula difficulty or in cardiopulmonary resuscitation emergency treatment.

In a more preferred embodiment, the length of the extension 111 is in a range of 3cm to 5 cm. The laryngeal mask is placed in the throat of a patient, the length of the extension part 111 ranges from 3cm to 5cm, the extension part 111 enters the esophagus of the patient at the moment, the esophagus air bag 112 is inflated through the second inflation device 121 to close the esophagus, the mask bag 102 is inflated through the first inflation device 120, and gastric juice can be prevented from overflowing even though a stomach tube is not taken down.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. An anti-reflux laryngeal mask, comprising: the device comprises an air pipe (100) and a guide pipe (110) which are connected and installed side by side, wherein a back plate (101) is fixedly arranged at the lower part of the air pipe (100), the periphery of the back plate (101) extends to enclose a covering bag (102), the lower part of the guide pipe (110) penetrates through and extends out of the covering bag (102) to form a protruding part (111), an esophagus air bag (112) is annularly arranged on the peripheral wall of the protruding part (111), and the covering bag (102) and the esophagus air bag (112) are respectively connected and provided with a first inflation device (120) and a second inflation device (121); the upper portion of breather pipe (100) and the upper portion of honeycomb duct (110) are connected side by side and are formed side by side portion, be equipped with laryngeal mask fixing device in the side by side portion, both ends are connected respectively and are equipped with connecting band (133) about laryngeal mask fixing device, and two connecting bands (133) are connected respectively and are equipped with left ear hanger (134), right ear hanger (135).

2. An anti-reflux laryngeal mask according to claim 1, characterised in that: the laryngeal mask fixing device comprises a stud (131) and a nut (132), wherein a through hole is formed in the middle of the stud (131), the through hole and the stud (131) are coaxially arranged, the parallel parts penetrate through the through hole, the stud (131) is fixedly connected with the parallel parts, the nut (132) is connected with the stud (131) in a threaded screwing mode, and two connecting bands (133) are respectively connected with the left end and the right end of the nut (132).

3. An anti-reflux laryngeal mask according to claim 1, characterised in that: the first inflation device (120) and the second inflation device (121) are components with the same structure, the first inflation device (120) comprises an inflation tube (122), one end of the inflation tube (122) is connected with the inner cavity of the mask bag (102), and the other end of the inflation tube (122) is sequentially provided with an indication vesicle (123) and a one-way valve (124).

4. An anti-reflux laryngeal mask according to claim 1, characterised in that: the positions of the vent pipe (100) and the draft tube (110) close to the cover bag (102) are provided with bent parts, and the included angle of the bent parts is 90-130 degrees.

5. An anti-reflux laryngeal mask according to claim 1, characterised in that: the connecting band (133) is an elastic bandage.

6. An anti-reflux laryngeal mask according to claim 1, characterised in that: the vent pipe (100), the guide pipe (110), the cover bag (102) and the esophagus air bag (112) are all made of non-toxic PVC materials.

7. An anti-reflux laryngeal mask according to claim 1, characterised in that: the length range of the extension part (111) is 3 cm-5 cm.