CN110051913B

CN110051913B - Inflation-free laryngeal mask

Info

Publication number: CN110051913B
Application number: CN201910369016.2A
Authority: CN
Inventors: 任永成; 万锡铭; 田书增; 陈三玲
Original assignee: Henan Jianqi Medical Equipment Co Ltd
Current assignee: Henan Jianqi Medical Equipment Co Ltd
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2021-08-20
Anticipated expiration: 2039-05-05
Also published as: CN110051913A

Abstract

The invention relates to an inflation-free laryngeal mask, which comprises a main pipe and a mask sac integrally formed with one end of the main pipe, wherein the inner cavity of the mask sac is communicated with the pipe cavity of the main pipe, a connecting pipe head connected with a breathing machine is formed at the other end of the main pipe, and the main pipe and the mask sac are both made of elastic materials; the bottom of the mask sac is in a closed ring shape, a first matching part used for being matched with the esophagus of a patient is formed at the tail end of the bottom of the mask sac, and a second matching part used for being attached to the throat of the patient is formed at the part, except the first matching part, of the bottom of the mask sac; the length L1 of the first matching part is at least three times of the length L2 of the second matching part on the central line of the bottom of the cover bag, so that the first matching part and the inner cavity of the cover bag form a buffer cavity. The laryngeal mask improves the sealing performance in use and ensures good ventilation.

Description

Inflation-free laryngeal mask

Technical Field

The invention relates to the field of laryngeal masks for medical treatment, in particular to an inflation-free laryngeal mask.

Background

The laryngeal mask, as a medical device for maintaining the respiratory ventilation of a patient, has been widely used in clinical anesthesia, emergency treatment or resuscitation because of its non-invasive airway characteristics.

In many patients who put into the stomach tube, because the stomach tube forms the arch in oral cavity nasopharynx bottom, lead to behind the laryngeal mask unable and the oral cavity wall make full contact after putting into the laryngeal mask, the laryngeal mask can slide to stomach tube one side partially can not with glottic mouth correct positioning, and then lead to the sealed effect to the glottic mouth poor, probably lead to the failure of ventilating.

The traditional laryngeal mask is of an air bag type, and the air bag is inflated when the laryngeal mask is used. Although the balloon type laryngeal mask is still in use, along with the development of the technology, a non-inflatable laryngeal mask appears. The utility model discloses a do not have to aerify drainage type laryngeal mask endotracheal tube as what grant utility model patent of publication No. CN207085036U, this laryngeal mask is including being responsible for and cover bag, and the one end of being responsible for is connected with cover bag, and the other end of being responsible for is equipped with the breathing machine and connects. Two independent cavities are arranged in the main pipe, one cavity is a ventilation cavity, and the other cavity is a drainage cavity. The cover bag is irregular and made of elastic material. When in use, the bottom surface of the mask sac is contacted with the throat of a patient, and the ventilation cavity and the inner cavity of the mask sac are communicated with the trachea of the patient. Although a drainage tube can be inserted for drainage, the bottom surface of the mask sac is not easy to seal with the laryngeal part of the pharynx of a patient, the placed position is improper, the trachea and the esophagus can be communicated, the phenomenon of aspiration or gas introduction into the esophagus and the stomach can be caused, the phenomenon of stomach distension and the like can occur at a certain probability in the actual medical treatment process.

Disclosure of Invention

The object of the present invention is to provide a solution to the problem.

In order to achieve the purpose, the invention adopts the following technical scheme:

the inflation-free laryngeal mask comprises a main pipe and a mask sac which is integrally formed with one end of the main pipe, wherein the inner cavity of the mask sac is communicated with the pipe cavity of the main pipe, a connecting pipe head connected with a breathing machine is formed at the other end of the main pipe, and the main pipe and the mask sac are both made of elastic materials;

the bottom of the mask sac is in a closed ring shape, a first matching part used for being matched with the esophagus of a patient is formed at the tail end of the bottom of the mask sac, and a second matching part used for being attached to the throat of the patient is formed at the part, except the first matching part, of the bottom of the mask sac;

the insertion direction of the mask sac into the patient body is defined as the length direction of the mask sac, the length of the mask sac is larger than the width of the mask sac, and the length L1 of the first matching part is at least three times of the length L2 of the second matching part on the central line of the bottom of the mask sac, so that the first matching part and the inner cavity of the mask sac form a buffer cavity.

Furthermore, a drainage pipeline is arranged in the main pipe and is isolated from an air duct in the main pipe.

Furthermore, a drainage tube is inserted in the drainage tube channel, the outer end of the drainage tube extends out from one radial side of the end part of the main tube, the end part of the main tube is provided with a chute extending in the radial direction, and the chute is communicated with the drainage tube channel.

Furthermore, the inner end of the drainage tube penetrates through the first matching part, and a through hole for the drainage tube to pass through is formed in the first matching part along the length direction of the mask sac.

Further, the drainage tube is in sealing fit with the wall of the perforation hole at the perforation hole by means of the elasticity of the perforation hole.

Furthermore, an adsorption material layer is arranged on the inner side of the buffer cavity and made of foam.

Furthermore, an identification wire slot is arranged on the outer side of the main pipe along the axial direction of the main pipe.

The invention has the beneficial effects that: the first matching part of the mask bag is relatively longer, so that when the mask bag is used, the first matching part can enter the position, adjacent to the airway, of the esophagus of a patient, the first matching part is attached to the position, air leakage between the esophagus and the airway of the patient is better prevented, and air between the lung of the patient and a breathing machine passes through the air vent of the mask bag. The bottom of the mask bag is communicated with the airway of the patient, so that good ventilation is ensured.

Drawings

FIG. 1 is a schematic view of the structure of the non-inflatable laryngeal mask of the present invention (with portions of the main tube and connector stub removed);

FIG. 2 is a schematic view of the structure of the non-inflatable laryngeal mask of the present invention (showing the scale of the size of the mask cuff);

FIG. 3 is a schematic view of the connector of the non-inflatable laryngeal mask of the present invention;

FIG. 4 is a schematic view of the structure of the connection pipe head of the non-inflatable laryngeal mask of the present invention (partially cut away inside);

FIG. 5 is a schematic view of a portion of the structure of the non-inflatable laryngeal mask of the present invention;

figure 6 is a schematic view of a portion of the configuration of the non-inflatable laryngeal mask of the present invention (shown with identification wire slots).

Names corresponding to the marks in the figure:

1. the mask comprises a main pipe, 2, a mask sac, 3, a drainage pipe, 11, a connector head, 12, a chute, 13, a drainage pipeline, 14, an identification line slot, 21, a mask sac inner cavity, 22, a bottom, 221, a first matching part, 222, a second matching part, 23, a through hole, 24 and a buffer cavity.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The embodiment of the inflation-free laryngeal mask comprises the following steps:

as shown in figures 1-6 of the drawings,

the inflation-free laryngeal mask comprises a main pipe 1 and a mask sac 2 which is integrally formed with one end of the main pipe 2, wherein an inner cavity 21 of the mask sac is communicated with a pipe cavity of the main pipe 1, and the pipe cavity is also a ventilation pipeline. The other end of the main pipe 1 is provided with a connector 11 connected with a breathing machine. The main tube 1 and the mask sac 2 are made of elastic materials, such as silica gel, so that the main tube can be bent in the process of being inserted into the oral cavity and the throat of a patient.

The bottom 22 of the mask 2 is in a closed ring shape, a first matching part 221 for matching with the esophagus of the patient is formed at the tail end of the bottom of the mask, and a second matching part 222 for fitting with the throat of the patient is formed at the part of the bottom of the mask except the first matching part.

The insertion direction of the mask sac into the patient body is defined as the length direction of the mask sac, and the length of the mask sac is larger than the width of the mask sac. And when the mask sac is inserted into the throat of a patient, the lower part of the mask sac is the lower end of the mask sac, and the upper part of the mask sac is the upper end of the mask sac. The bottom 22 of the casing has a shape that gradually shrinks from top to bottom.

The bottom 22 of the capsule is formed by a circular turn and encloses a vent in the centre. The flanging is a horizontal bottom surface in a normal state, and forms the cover bag inner cavity 21 with the inner side of the upper part of the cover bag. The vent is aligned with the air passage at the throat when in use, and the caliber of the vent is larger than that of the vent pipeline in the main pipe. The length L1 of the first fitting part is three times the length L2 of the second fitting part on the center line of the bottom of the capsule, i.e., on the symmetry plane of the capsule, so that a relatively large buffer chamber 24 is formed between the first fitting part and a part of the inner side wall of the inner chamber of the capsule. The first cooperation portion of the mask bag sets up relatively longer, and when the mask bag is used, the first cooperation portion can enter into the position adjacent to the airway of the esophagus of the patient, the first cooperation portion is attached to the position, the gas leakage between the esophagus and the airway of the patient is prevented, and the gas between the lung of the patient and the breathing machine passes through the vent of the mask bag. The bottom of the mask bag and the air passage of the patient are sealed, and good ventilation is guaranteed.

In addition, the buffer cavity with relatively large space is arranged, so that the buffer adjustment can be performed on the gas pressure in the ventilation process, and the adaptability of a patient is improved.

Referring to fig. 3 and 4, a drainage pipe 13 is arranged in the main pipe 1, and the drainage pipe 13 is isolated from an air duct in the main pipe. It is known to provide only two pipes in the main pipe. The invention makes the following changes on the basis of the prior art:

the drainage tube 3 is inserted in the drainage tube 13, the outer end of the drainage tube extends out from one radial side of the end part of the main tube, the end part of the main tube is provided with a chute 12 extending in the radial direction, and the chute 12 is communicated with the drainage tube 13. The drainage tube can stretch out from the radial one side of the end part of the main tube instead of stretching out in parallel, so that the connection and the matching of the connecting tube head of the main tube and the breathing machine by the drainage tube are avoided.

As shown in FIG. 5, the inner end of the drainage tube 3 passes through the first fitting portion, and the first fitting portion is provided with a through hole 23 for passing the drainage tube along the length direction of the housing. The tube head of the drainage tube does not directly penetrate through the vent of the mask sac, but penetrates through the joint of the mask sac body and the first matching part, and the drainage tube is in sealing fit with the wall of the perforated hole at the perforated hole by virtue of the elasticity of the perforated hole. The drainage tube is arranged, so that the drainage can be performed, and the mutual connection of the airway and the esophagus of a patient is prevented, and the reflux is prevented from entering the lung of the patient.

Furthermore, an adsorption material layer is pasted on the inner side of the buffer cavity and made of foam. The foam can absorb the secretion generated by the airway of some patients. The adsorption material layer is arranged close to the perforation, so that the buffer cavity can form a collection cavity for collecting secretion, and the ventilation effect is further improved. Of course, the layer of absorbent material is disposed to avoid the draft tube.

Further, the outer side of the main pipe 1 is provided with an identification wire groove 14 in the axial direction thereof, as shown in fig. 6. The identification line slot 14 is an inner slot on the pipe wall of the main pipe and is integrally formed with the main pipe. The identification line slot is formed to be 0.5mm or 1mm wide, and the depth is not more than 0.5mm, so that the main pipe is prevented from injuring the patient when entering the patient. Through setting up the discernment wire casing, the doctor can observe and judge the approximate position of cover bag in the patient, whether place just to and be responsible for whether there is the distortion. Furthermore, scale marks can be arranged in the length direction of the identification wire casing so that a doctor can judge the insertion depth of the mask bag.

In other embodiments, L1 may be between three and four times that of L2, such as L1 being 4 times that of L2, or 3.5 times.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.

Claims

1. Exempt from inflatable laryngeal mask, its characterized in that: the breathing machine comprises a main pipe and a cover sac integrally formed with one end of the main pipe, wherein the inner cavity of the cover sac is communicated with the pipe cavity of the main pipe, a connecting pipe head connected with a breathing machine is formed at the other end of the main pipe, and the main pipe and the cover sac are both made of elastic materials;

the bottom of the cover bag is in a closed ring shape, the tail end of the bottom of the cover bag forms a first matching part used for matching with the esophagus of a patient, the bottom of the cover bag is formed by a circle of turned-over edge, a vent hole is formed by the center of the bottom of the cover bag in a surrounding mode, the turned-over edge is a horizontal bottom surface in a normal state, and the inner side of the upper part of the cover bag forms an inner cavity of the cover bag; the part of the mask sac bottom except the first matching part forms a second matching part for fitting with the throat of a patient;

the insertion direction of the mask bag into the patient body is defined as the length direction of the mask bag, the length of the mask bag is larger than the width of the mask bag, and the length L1 of the first matching part is at least three times of the length L2 of the second matching part on the central line of the bottom of the mask bag, so that a relatively large buffer cavity is formed between the first matching part and a part of the inner side wall of the inner cavity of the mask bag, and the pressure of gas in the ventilation process is buffered and adjusted;

be equipped with the drainage tube in the main pipe, the air duct in drainage tube and the main pipe keeps apart, drainage tube interpolation is equipped with the drainage tube, and the outer end of drainage tube stretches out by the radial one side of main pipe tip, and the main pipe tip is equipped with radial extended chute, chute and drainage tube intercommunication.

2. The non-inflatable laryngeal mask of claim 1, wherein: the inner end of the drainage tube penetrates through the first matching part, and a through hole for the drainage tube to pass through is formed in the first matching part along the length direction of the cover sac.

3. The non-inflatable laryngeal mask of claim 2, wherein: the drainage tube is in sealing fit with the wall of the perforation hole at the perforation hole by means of the elasticity of the perforation hole.

4. The non-inflatable laryngeal mask of claim 3, wherein: the buffer chamber inboard is equipped with the adsorbed material layer, and the adsorbed material layer adopts the cotton system of bubble.

5. The non-inflatable laryngeal mask of claim 1, wherein: an identification wire slot is arranged on the outer side of the main pipe along the axial direction of the main pipe.