CN216417300U

CN216417300U - Dredging device and connecting piece for respiratory tract blockage

Info

Publication number: CN216417300U
Application number: CN202121467273.9U
Authority: CN
Inventors: 何礼桂
Original assignee: Shenzhen Sanyi Enterprise Technology Co ltd
Current assignee: Shenzhen Sanyi Enterprise Technology Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-05-03
Anticipated expiration: 2031-06-30

Abstract

A dredging device and a connecting piece for airway obstructions. The dredging device comprises a telescopic air bag, a connecting piece and a mask; the telescopic air bag is provided with an air storage cavity and an opening; the connecting piece is connected with the opening and is provided with a first one-way valve and a second one-way valve; the first air outlet end of the first one-way valve is communicated to the air storage cavity, the second air inlet end of the second one-way valve is communicated with the air storage cavity, and the second air outlet end of the second one-way valve is communicated with the outside; the face mask is connected with the first air inlet end of the first one-way valve and is provided with a flexible annular cushion. When in use, the flexible annular cushion surrounds the mouth of the suffocation patient and is tightly attached to the face so as to connect the respiratory tract of the patient; then, the mask is held by one hand, and the telescopic air bag is rapidly and repeatedly pressed and stretched by the other hand, so that the blockage in the respiratory tract of the patient can be extracted. Therefore, the dredging device can be used as a standby device and safety guarantee under the condition that the rescue mode of utilizing the Helmink is invalid or no other people help around the Helmink.

Description

Dredging device and connecting piece for respiratory tract blockage

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a dredging device and a connecting piece for a respiratory tract blockage.

Background

Asphyxia caused by airway obstruction often causes respiratory arrest and is fatal if emergency treatment is not performed within 4-6 minutes; even if the life is saved, irreversible damage is often caused by too long time of oxygen deficiency. Therefore, during rescue, the respiratory tract blockage caused by various reasons must be removed within minutes and seconds, so that the airway is unblocked, and the wounded can be ensured to send back safely in time. Providing the opportunity for the wounded to take the next treatment.

At present, patients with respiratory obstruction are usually treated by 'Haimliki' first aid, but the ordinary public can not normally carry out the 'Haimliki' first aid method correctly without training, so that the patients who are choked to cause the respiratory obstruction die.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dredging device for a respiratory tract blockage, which has a simple structure, is easy to operate and is practical and effective. Under the condition that a 'Helmink' rescue mode cannot be effectively implemented or under the condition that no other people assist the surrounding, a standby device and safety guarantee are provided. Moreover, if respiratory tract obstruction per se is suffocated, self rescue can be tried by using the dredging device under the condition that other people do not help the surrounding.

The utility model also aims to provide a connecting piece for the dredging device.

In order to solve the technical problem, the technical scheme adopted by the utility model is to provide a dredging device for the respiratory obstruction, which comprises a telescopic air bag, a connecting piece and a face mask which are connected in sequence; the inside of the telescopic air bag is provided with an air storage cavity, the top of the telescopic air bag is sealed, and the bottom of the telescopic air bag is provided with an open mouth communicated with the air storage cavity; the upper side of the connecting piece is connected with the opening in a sealing manner, and the connecting piece is provided with a first one-way valve and a second one-way valve; the first air outlet end of the first one-way valve is communicated to the air storage cavity, the second air inlet end of the second one-way valve is communicated with the air storage cavity, and the second air outlet end of the second one-way valve is communicated with the outside; the upper side of the mask is connected with the first air inlet end of the first one-way valve in a sealing mode, and the lower side of the mask is provided with a flexible annular cushion used for being attached to the face.

By adopting the dredging device of the technical scheme, the flexible annular cushion of the mask can surround the mouth of the suffocation patient and is tightly attached to the face, so that the respiratory tract of the patient is connected; then, the mask is held by one hand to keep the seal between the mask and the face, and the telescopic air bag is repeatedly pressed and stretched by the other hand, so that the blockage in the respiratory tract of the patient can be quickly extracted; in the process that the telescopic air bag is compressed, the air in the air storage cavity can be discharged to the outside from the second one-way valve and cannot enter the respiratory tract of the patient through the first one-way valve; at the tensile in-process of flexible gasbag, the volume increase of gas storage cavity, and the second check valve can prevent external gas again to flow into in the gas storage cavity to form the negative pressure at the gas storage cavity, also atmospheric pressure in the gas storage cavity is less than the atmospheric pressure in patient's the respiratory track this moment, atmospheric pressure in the respiratory track can form outside thrust to the obstruction like this, thereby will obstruct the discharge.

In the dredging device for the airway obstruction, the connecting piece is provided with a plurality of second one-way valves, and the second one-way valves are arranged around the first one-way valve. Through setting up a plurality of second check valves, can accelerate the outer speed of arranging of the gas in the in-process air storage cavity that flexible gasbag compressed, be favorable to improving the efficiency of pushing down flexible gasbag.

In the dredging device for the respiratory tract blockage, the connecting piece is provided with a chassis, and the chassis is provided with a central cylinder body which is communicated up and down; the first one-way valve is of a hollow structure made of elastic materials and comprises a deformation part and a first base part which are connected, the first air outlet end is at least three first gaps which are arranged at the top end of the deformation part, the ends of the at least three first gaps, which extend towards the center, are intersected at the same point, and the first air inlet end is a first air vent which is arranged in the middle of the first base part; the first base extends into the central cylinder, the outer side of the first base is connected with the inner side of the central cylinder in a sealing mode, and the lower end of the central cylinder is connected with the upper side of the mask in a sealing mode; the deformation part is exposed out of the central cylinder and extends into the air storage cavity; when gas flows in from the first vent hole, the pressure in the deformation part is gradually increased, so that the deformation part is subjected to expansion deformation, the at least three first gaps are opened, and the gas on the side of the first vent hole is allowed to flow into the gas storage cavity; when the gas flowing in from the first vent hole is reduced or disappears, the pressure in the deformation part is reduced or is zero, the deformation part contracts under the action of the elasticity of the deformation part, so that the three first gaps are closed, and the gas in the gas storage cavity is prevented from flowing out from the first vent hole.

In the device for dredging the airway obstruction, the upper side of the face mask is provided with a connecting cylinder with a vertically through middle part, the connecting cylinder is inserted into the inner side of the lower end of the central cylinder from bottom to top, and the outer side of the connecting cylinder is hermetically connected with the inner side of the central cylinder.

In the dredging device for the airway obstruction, provided by the utility model, a first circumferential side wall surrounding the central cylinder body is arranged on the upper side of the chassis, and the upper end of the first circumferential side wall is inwards contracted to form a stopping edge; the telescopic air bag is provided with a second circumferential side wall made of elastic material, and the second circumferential side wall is provided with a plurality of layers of folds protruding outwards; the first circumferential side wall wraps the folds at the lowest side of the second circumferential side wall, and the stopping edge wraps the upper sides of the folds at the lowest side. Therefore, the stability of connection between the connecting piece and the telescopic air bag is ensured, and the connecting piece is prevented from being separated from the telescopic air bag.

In the dredging device for the airway obstruction, provided by the utility model, a plurality of reinforcing strips are arranged on the upper side of the chassis, and two opposite ends of each reinforcing strip are respectively connected with the inner side of the first peripheral side wall and the outer side of the central cylinder. The reinforcing strip is used for stabilizing the connecting piece, increasing the hardness of the connecting piece and avoiding deformation of the first one-way valve or the second one-way valve or unstable connection between components caused by excessive deformation of the connecting piece.

In the dredging device for the airway obstruction, the top wall of the telescopic air bag is connected with a handle which can be held. Therefore, the handle can be held to press or stretch the telescopic air bag, so that the force is applied by a rescuer.

In the dredging device for the airway obstruction, the number of the first gaps is four, and the four first gaps are in a cross shape.

In the dredging device for the respiratory tract blockage, the connecting piece is provided with a chassis, and the chassis is provided with a peripheral cylinder body which is communicated up and down; the second one-way valve is a duckbill valve and comprises a duck bill part and a second base part which are connected, the second air inlet end is a second air vent arranged in the middle of the second base part, and the second air outlet end is a second gap arranged in the duck bill part; the outer side of the second base is hermetically connected with the inner side of the peripheral cylinder, and the second ventilation hole of the second base is communicated with the gas storage cavity; the duck bill extends into the peripheral cylinder, and the lower end of the peripheral cylinder is communicated with the outside; when gas flows in from the second vent hole, the pressure in the duckbill part is gradually increased so that the duckbill part is expanded and deformed, and the second gap is opened, so that the gas in the gas storage cavity is allowed to be discharged to the outside; when the gas flowing in from the second vent hole is reduced or disappears, the pressure in the deformation part is reduced or is zero, and the duck bill part contracts under the action of the elasticity of the duck bill part so that the second gap is folded, and therefore the external gas is prevented from flowing into the gas storage cavity from the second vent hole.

In the dredging device for the airway obstruction, the connecting piece is an integrally formed piece made of elastic materials. The connecting piece is an integrated piece, so that the good air tightness of the connecting piece can be ensured, and the negative pressure can be formed in the air storage cavity of the telescopic air bag.

In the dredging device for the airway obstruction, the face mask, the connecting piece and the telescopic air bag are integrated.

In the dredging device for the airway obstruction, the telescopic air bag is not provided with a vent hole which is directly communicated with the outside.

In order to solve another technical problem, the technical scheme adopted by the utility model is to provide a connecting piece for a dredging device, wherein the connecting piece comprises a chassis, and a first one-way valve and a second one-way valve which are arranged on the chassis; the first one-way valve and the second one-way valve allow airflow to pass through in opposite directions; the connecting piece is an integrally formed piece made of elastic materials.

In the connector provided by the utility model, the connector is provided with the first one-way valve and the second one-way valves, and the second one-way valves are arranged around the first one-way valve.

In the connecting piece provided by the utility model, the chassis is provided with a central cylinder body which is communicated up and down; the first one-way valve is of a hollow structure and comprises a deformation part and a first base part which are connected, and a first air outlet end and a second air vent of the first one-way valve are respectively arranged on the deformation part and the first base part; the first air outlet end is at least three first gaps formed at the top end of the deformation part, and the ends of the at least three first gaps extending towards the center are intersected at the same point; the first air inlet end is a first vent hole formed in the middle of the first base.

In the connecting piece provided by the utility model, the second one-way valve is a duckbill valve, the second one-way valve comprises a duckbill part and a second base part which are connected, and a second air outlet end and a second air inlet end of the second one-way valve are respectively arranged on the duckbill part and the second base part; the second air inlet end is a second vent hole formed in the middle of the second base part; the second air outlet end is a second gap arranged in the duck bill part; the duck bill and the deformation part face to two opposite sides of the chassis respectively.

In the connecting piece provided by the utility model, the dredging device is the dredging device.

The dredging device can achieve the following beneficial effects: the dredging device comprises a telescopic air bag, a connecting piece and a mask which are connected in sequence; the inside of the telescopic air bag is provided with an air storage cavity, the top of the telescopic air bag is sealed, and the bottom of the telescopic air bag is provided with an open mouth communicated with the air storage cavity; the upper side of the connecting piece is connected with the opening in a sealing manner, and the connecting piece is provided with a first one-way valve and a second one-way valve; the first air outlet end of the first one-way valve is communicated to the air storage cavity, the second air inlet end of the second one-way valve is communicated with the air storage cavity, and the second air outlet end of the second one-way valve is communicated with the outside; the upper side of the mask is connected with the first air inlet end of the first one-way valve in a sealing mode, and the lower side of the mask is provided with a flexible annular cushion used for being attached to the face. When the dredging device is used, the flexible annular cushion of the mask can surround the mouth of the suffocation patient and is tightly attached to the face, so that the respiratory tract of the patient is connected; then the mask is held by one hand to keep the seal between the mask and the face, and the action of pressing down and stretching the telescopic air bag is repeated rapidly by the other hand, so that the blockage in the respiratory tract of the patient can be extracted. Therefore, the dredging device can be used as a standby device and safety guarantee under the condition that the rescue mode of utilizing the Helmink is invalid or no other people assist the surrounding under the condition that the infarction is rescued by suffocation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts:

fig. 1 is a perspective combination schematic view of the dredging device provided by the embodiment;

fig. 2 is a perspective exploded schematic view (one) of the dredging device provided in this embodiment;

fig. 3 is a schematic perspective exploded view (ii) of the dredging device provided in this embodiment;

fig. 4 is a schematic view of the combination of the connecting member and the telescopic airbag provided in this embodiment.

The reference numerals in the detailed description illustrate:

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Typical embodiments of the utility model are given in the accompanying drawings. The utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

The embodiment provides a dredging device for airway obstruction. Referring to fig. 1, fig. 1 is a perspective combination schematic view of the dredging device provided by the embodiment, and as shown in fig. 1, the dredging device comprises a telescopic air bag 3, a connecting piece 2 and a mask 1 which are connected in sequence. Referring to fig. 2, fig. 2 is a schematic exploded perspective view (one) of the dredging device provided in this embodiment, and in fig. 2, it can be seen that the interior of the telescopic air bag 3 has an air storage cavity, and the top of the telescopic air bag 3 is sealed and the bottom has an open port 32 communicating with the air storage cavity. In this embodiment, the upper side of the connecting member 2 is hermetically connected to the open hole 32, specifically, referring to fig. 3, fig. 3 is a schematic exploded perspective view (ii) of the dredging device provided in this embodiment, and as can be seen in fig. 3, the connecting member 2 is made of an elastic material and has a bottom plate 23, an annular first peripheral sidewall 24 is disposed on the upper side of the bottom plate 23, an upper end of the first peripheral sidewall 24 is inwardly contracted to form a stopping edge 241, the telescopic airbag 3 has a second peripheral sidewall 33 made of an elastic material, and the second peripheral sidewall 33 has a plurality of layers of outwardly protruding corrugations. The inner diameter of the stopping edge 241 is smaller than the inner diameter of the fold 331 of the lowermost layer of the telescopic airbag 3, and since the telescopic airbag 3 and the connecting member 2 are both made of elastic materials, the fold 331 of the lowermost layer of the telescopic airbag 3 can enter the notch surrounded by the stopping edge 241 through deformation. The telescopic airbag 3 does not have a vent hole directly communicating with the outside. Referring to fig. 4, fig. 4 is a schematic view illustrating the connection element 2 and the airbag 3 according to the embodiment, as shown in fig. 4, when the connection element 2 and the airbag 3 are connected and combined, the second peripheral sidewall 33 is inserted into the first peripheral sidewall 24, the first peripheral sidewall 24 covers the lowest pleat 331 of the second peripheral sidewall 33, and the stopping edge 241 covers the upper side of the lowest pleat 331. Thus, the stability of the connection between the connector 2 and the airbag 3 is ensured, and the connector 2 is prevented from being separated from the airbag 3. And the outer side of the second peripheral side wall 33 is tightly attached to the inner side of the first peripheral side wall 24, so that the air tightness between the connecting member 2 and the telescopic airbag 3 is ensured to be good. In this embodiment, the connecting member 2 has a first one-way valve 21, a first air outlet end of the first one-way valve 21 is communicated to the air storage cavity, specifically, please refer to fig. 3, the chassis 23 is provided with a central cylinder 26 which is vertically penetrated and surrounded by the first circumferential sidewall 24, the first one-way valve 21 is a hollow structure made of an elastic material and includes a deformation portion 212 and a first base portion which are connected, the first air outlet end is four first slits 2121 opened at a top end of the deformation portion 212, the four first slits 2121 are cross-shaped, and ends of the four first slits 2121 extending toward the center meet at the same point. Of course, in some other embodiments, the number of the first slits 2121 on the first one-way valve 21 may be 3, 5 or 6, etc. The first air inlet end is a first vent hole formed in the middle of the first base part; the first base extends into the central cylinder 26, the outer side of the first base is connected with the inner side of the central cylinder 26 in a sealing way, and the lower end of the central cylinder 26 is connected with the upper side of the mask 1 in a sealing way; the deformation is exposed from the central cylinder 26 and extends into the air storage cavity. It is understood that, when gas flows in from the first vent hole, the pressure in the deformation portion gradually increases so that the deformation portion is subjected to expansion deformation, so that the four first slits 2121 are opened, thereby allowing the gas on the side of the first vent hole to flow into the gas storage cavity; when the gas flowing in from the first vent hole is reduced or disappeared, the pressure in the deformation part is reduced or zero, and the deformation part contracts under the self-elastic action so that the four first slits 2121 are closed, thereby preventing the gas in the gas storage cavity from flowing out from the first vent hole. In this embodiment, the connecting member 2 further has a second one-way valve 22, a second air inlet end of the second one-way valve 22 is communicated with the air storage cavity, and a second air outlet end is communicated with the outside. Specifically, please refer to fig. 3 continuously, the chassis 23 is provided with a peripheral cylinder 25 which is vertically penetrated and surrounded by the first peripheral sidewall 24; the second check valve 22 is a duckbill valve, the second check valve 22 includes a duckbill portion 222 and a second base portion 221 connected to each other, the second air inlet end is a second air vent opened in the middle of the second base portion 221, and the second air outlet end is a second gap 2221 formed in the duckbill portion 222; the outer side of the second base 221 is hermetically connected with the inner side of the peripheral cylinder 25, and the second vent hole of the second base 221 is communicated with the gas storage cavity; referring to fig. 2, the duck bill 222 extends into the peripheral cylinder 25, and the lower end of the peripheral cylinder 25 is communicated with the outside. It can be understood that, when the gas flows in from the second vent hole, the pressure in the duck bill 222 gradually increases so that the duck bill 222 expands and deforms, so that the second slit 2221 is opened, thereby allowing the gas in the gas storage cavity to be discharged to the outside; when the gas flowing in from the second vent is reduced or eliminated, the pressure in the deformation portion is reduced or zero, and the duck bill portion 222 contracts under the elastic action thereof so that the second slit 2221 is closed, thereby preventing the external gas from flowing into the gas storage cavity from the second vent. In this embodiment, the upper side of the mask 1 is sealingly connected to the first inlet end of the first one-way valve 21. Specifically, referring to fig. 3, the upper side of the face mask 1 is provided with a connecting tube 12 which is vertically penetrated in the middle. When the mask 1 and the connecting piece 2 are combined, the connecting cylinder 12 is inserted into the inner side of the lower end of the central cylinder 26 from bottom to top, and the outer side of the connecting cylinder 12 is connected with the inner side of the central cylinder 26 in a sealing manner. Referring to fig. 2 and 3, the underside of the mask 1 has a flexible annular cushion 11 for fitting against the face.

When the dredging device provided by the embodiment is used for rescuing the asphyxia patient, the flexible annular cushion 11 of the mask 1 surrounds the mouth of the asphyxia patient and is tightly attached to the face, so that the respiratory tract of the patient is connected; then, the mask 1 is held by one hand to keep the seal between the mask 1 and the face, and the action of pressing and stretching the telescopic air bag 3 is repeated by the other hand, so that the blockage in the respiratory tract of the patient can be quickly extracted. It should be explained that, during the compression of the telescopic airbag 3, the air flow direction is from the inside of the telescopic airbag 3 to the outside of the telescopic airbag 3 at the second one-way valve 22, and the first one-way valve 21 is closed tightly, that is, the air in the air storage cavity can be exhausted from the second one-way valve 22 to the outside, and cannot enter the respiratory tract of the patient through the first one-way valve 21; in the process that the telescopic airbag 3 is stretched, the volume of the air storage cavity is increased, the second gap 2221 of the second one-way valve 22 is tightly closed to prevent outside air from flowing into the air storage cavity, negative pressure is formed in the air storage cavity, namely, the air pressure in the air storage cavity is lower than the air pressure in the respiratory tract of a patient at the moment, the air flow direction is from the first one-way valve 21 to flow from the outside of the telescopic airbag 3 to the inside of the telescopic airbag 3, so that the air pressure in the respiratory tract can form outward thrust to a blocking object, the blocking object is discharged into the telescopic airbag 3 from the first one-way valve 21, the closed telescopic airbag 3 can collect the crumbs of partial oral cargo esophagus, and residual backflow in the telescopic airbag 3 is avoided.

In conclusion, by using the dredging device, the patient suffering from respiratory infarction asphyxia can be quickly and effectively rescued by only repeating simple stretching operation. Therefore, under the condition that the 'Helmink' rescue mode cannot be effectively implemented, the dredging device can be used for quickly and effectively rescuing the suffocating patient suffering from the respiratory tract infarction. Moreover, if respiratory tract obstruction per se is suffocated, effective self rescue can be carried out by using the dredging device under the condition that no other people assist the surrounding.

It should be noted that, in the process of compressing the telescopic airbag 3, the gas in the air storage cavity of the telescopic airbag 3 is compressed, the air pressure in the air storage cavity increases, and the deformation portion of the first check valve 21 is compressed and further compressed, so that the first slit 2121 of the first check valve 21 is closed more tightly, and the gas in the air storage cavity is better prevented from flowing into the respiratory tract of the patient through the first check valve 21. Similarly, when the telescopic airbag 3 is stretched, the air pressure in the air storage cavity is reduced, and the duckbill portion 222 of the second one-way valve 22 is further contracted under the pressure of the external air pressure, so that the second slit 2221 of the second one-way valve is closed more tightly, and external air is prevented from flowing into the air storage cavity better, so that a higher and more stable negative pressure is formed in the air storage cavity.

It should be mentioned that, the four first slits 2121 communicated with each other are arranged on the deformation portion of the air outlet end of the first one-way valve 21, so that the air outlet end of the first one-way valve 21 can be opened more easily (compared with a common duckbill valve), which is beneficial to discharge the obstruction in the respiratory tract of the patient.

It should be noted that the flexible annular cushion 11 may be used to surround the mouth (or mouth and nose) of a suffocating patient simultaneously when the pull through is in use. Moreover, the flexible annular cushion 11 can be adapted to different facial shapes so that the face mask 1 can be tightly attached to the faces of different patients, and good air tightness between the face mask 1 and the faces of the patients is ensured. In addition, the flexible annular cushion 11 can be used for buffering when being compressed, and the face of a patient is prevented from being injured.

Further, the connecting member 2 is an integrally formed member made of an elastic material. That is, the bottom plate 23, the first peripheral wall 24, the central cylinder 26, the peripheral cylinder 25, the first check valve 21, and the second check valve 22 are integrally formed. This ensures that the connector 2 itself is gas tight, thereby ensuring that a stable negative pressure can be formed in the air reservoir.

Further, face guard 1, connecting piece 2 and flexible gasbag 3 are integrative, be non-detachable between face guard 1, connecting piece 2 and the flexible gasbag 3, need not the equipment before so using, make things convenient for the very first time in time to use. Meanwhile, the separation phenomenon among the face mask 1, the connecting piece 2 and the telescopic air bag 3 in the using process is prevented.

Further, referring to fig. 3, the connector 2 has a plurality of the second check valves 22, and the plurality of the second check valves 22 are disposed around the first check valve 21. Here, by providing the plurality of second check valves 22, the discharge speed of the gas in the gas storage cavity in the process that the telescopic airbag 3 is compressed can be accelerated, which is beneficial to improving the efficiency of pressing the telescopic airbag 3.

Further, referring to fig. 3, a plurality of reinforcing bars 27 are provided on the upper side of the bottom plate 23, and opposite ends of each reinforcing bar 27 are respectively connected to the inner side of the first peripheral side wall 24 and the outer side of the central cylinder 26. Here, the reinforcing bar 27 serves to stabilize the connection member 2, to increase the rigidity of the connection member 2, and to prevent the first check valve 21 or the second check valve 22 from being deformed or the connection between the components from being unstable due to excessive deformation of the connection member 2.

Further, a handle 31 for holding is connected to the top wall of the telescopic airbag 3. Thus, the handle 31 can be held to push down or pull up the airbag 3, thereby facilitating the force application by the rescuer. Of course, in some other embodiments, the handle 31 may be replaced by a pull handle, which is also beneficial for the rescuer to press and pull the telescopic airbag 3.

The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, which is protected by the following claims.

Claims

1. The dredging device for the airway obstruction is characterized by comprising a telescopic air bag (3), a connecting piece (2) and a mask (1) which are sequentially connected;

the inside of the telescopic air bag (3) is provided with an air storage cavity, the top of the telescopic air bag (3) is sealed, and the bottom of the telescopic air bag is provided with an open hole (32) communicated with the air storage cavity;

the upper side of the connecting piece (2) is connected with the open opening (32) in a sealing way, and the connecting piece (2) is provided with a first one-way valve (21) and a second one-way valve (22); a first air outlet end of the first one-way valve (21) is communicated to the air storage cavity, a second air inlet end of the second one-way valve (22) is communicated with the air storage cavity, and a second air outlet end of the second one-way valve is communicated with the outside;

the upper side of the face mask (1) is connected with the first air inlet end of the first one-way valve (21) in a sealing mode, and the lower side of the face mask (1) is provided with a flexible annular cushion (11) which is used for being attached to the face.

2. The airway obstruction deoccluding device of claim 1, wherein the connector (2) has a plurality of the second one-way valves (22), the plurality of the second one-way valves (22) being disposed around the first one-way valve (21).

3. The obstruction means of claim 1, wherein said connecting member (2) has a base plate (23), said base plate (23) having a central cylinder (26) extending therethrough; the first one-way valve (21) is of a hollow structure made of elastic materials and comprises a deformation part (212) and a first base part which are connected, the first air outlet end is at least three first gaps (2121) formed in the top end of the deformation part (212), one ends of the at least three first gaps (2121) extending towards the center are intersected at the same point, and the first air inlet end is a first vent hole formed in the middle of the first base part; the first base extends into the central cylinder (26), the outer side of the first base is connected with the inner side of the central cylinder (26) in a sealing mode, and the lower end of the central cylinder (26) is connected with the upper side of the mask (1) in a sealing mode; the deformation part is exposed out of the central cylinder (26) and extends into the air storage cavity; when gas flows in from the first vent hole, the pressure in the deformation part is gradually increased so that the deformation part is subjected to expansion deformation, so that the at least three first gaps (2121) are opened, and the gas on the side of the first vent hole is allowed to flow into the gas storage cavity; when the gas flowing in from the first vent hole is reduced or disappears, the pressure in the deformation part is reduced or zero, the deformation part contracts under the action of the elasticity of the deformation part, so that the three first gaps (2121) are closed, and the gas in the gas storage cavity is prevented from flowing out from the first vent hole.

4. The dredging device for airway obstruction according to claim 3, wherein the upper side of the face mask (1) is provided with a connecting cylinder (12) with a vertically through middle part, the connecting cylinder (12) is inserted into the inner side of the lower end of the central cylinder (26) from bottom to top, and the outer side of the connecting cylinder (12) is hermetically connected with the inner side of the central cylinder (26).

5. The airway obstruction dredge device of claim 3, wherein the upper side of the chassis (23) is provided with a first circumferential side wall (24) surrounding the central cylinder (26), the upper end of the first circumferential side wall (24) is inwardly contracted to form a stopping edge (241); the telescopic airbag (3) has a second perimetral wall (33) made of elastic material, the second perimetral wall (33) having a plurality of layers of outwardly convex folds; the first peripheral side wall (24) covers the lowest fold (331) of the second peripheral side wall (33), and the stop edge (241) covers the upper side of the lowest fold (331).

6. The obstruction means according to claim 5, wherein said chassis (23) is provided at an upper side thereof with a plurality of reinforcing strips (27), each of said reinforcing strips (27) having opposite ends connected to an inner side of said first peripheral wall (24) and an outer side of said central cylinder (26), respectively.

7. The obstruction removal device according to claim 1, wherein a handle (31) is connected to the top wall of the telescopic air bag (3) for holding.

8. The obstruction means of claim 3, wherein the number of the first slits (2121) is four, and four of the first slits (2121) have a cross shape.

9. The obstruction means of claim 3, wherein said connecting member (2) has a base plate (23), said base plate (23) being provided with a peripheral cylinder (25) which passes through up and down; the second one-way valve (22) is a duckbill valve, the second one-way valve (22) comprises a duck bill part (222) and a second base part (221) which are connected, the second air inlet end is a second air vent arranged in the middle of the second base part (221), and the second air outlet end is a second gap (2221) arranged in the duck bill part (222); the outer side of the second base part (221) is hermetically connected with the inner side of the peripheral cylinder body (25), and a second vent hole of the second base part (221) is communicated with the gas storage cavity; the duck bill part (222) extends into the peripheral cylinder body (25), and the lower end of the peripheral cylinder body (25) is communicated with the outside; when the gas flows in from the second vent hole, the pressure in the duck bill part (222) is gradually increased so that the duck bill part (222) expands and deforms, so that the second gap (2221) is opened, and the gas in the gas storage cavity is allowed to be discharged to the outside; when the gas flowing in from the second vent hole is reduced or disappears, the pressure in the deformation part is reduced or is zero, and the duck bill part (222) contracts under the self elastic action so that the second gap (2221) is closed, so that the external gas is prevented from flowing into the gas storage cavity from the second vent hole.

10. The airway obstruction deoccluding device of claim 1, wherein the connecting member (2) is an integrally formed piece made of an elastic material.

11. The obstruction removal device according to claim 1, wherein said mask (1), said connector (2) and said inflatable balloon (3) are integral.

12. The device for unclogging airway blockages according to claim 1, characterized in that the telescopic balloon (3) has no vent hole directly communicating with the outside.

13. A connection piece for a pull through according to any of claims 1-12, c h a r a c t e r i z e d in that the connection piece (2) comprises a bottom disc (23) and a first one-way valve (21) and a second one-way valve (22) arranged in the bottom disc (23); the first one-way valve (21) and the second one-way valve (22) allow the direction of air flow to pass through are opposite; the connecting piece (2) is an integrally formed piece made of elastic materials.

14. The connection according to claim 13, characterized in that the connection (2) has one said first one-way valve (21) and a plurality of said second one-way valves (22), a plurality of said second one-way valves (22) being arranged around the first one-way valve (21).

15. A connection piece according to claim 14, wherein the chassis (23) is provided with a central cylinder (26) passing through it; the first one-way valve (21) is of a hollow structure and comprises a deformation part (212) and a first base part which are connected, and a first air outlet end and a second air outlet hole of the first one-way valve (21) are respectively arranged on the deformation part (212) and the first base part; the first air outlet end is at least three first gaps (2121) formed at the top end of the deformation part (212), and one ends of the at least three first gaps (2121) extending towards the center are intersected at the same point; the first air inlet end is a first vent hole formed in the middle of the first base.

16. The connector of claim 15, wherein the second one-way valve (22) is a duckbill valve, the second one-way valve (22) comprising a connected duckbill portion (222) and a second base portion (221), a second outlet end and a second inlet end of the second one-way valve (22) being provided at the duckbill portion (222) and the second base portion (221), respectively; the second air inlet end is a second air vent arranged in the middle of the second base part (221); the second air outlet end is a second gap (2221) arranged in the duck bill part (222); the duck bill portion (222) and the deformation portion (212) face opposite sides of the chassis (23), respectively.

17. A connection according to claim 15, wherein the pull through is as claimed in claim 1.