CN115530947A - Device and connecting piece for dredging airway blockage - Google Patents

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

Device and connecting piece for dredging airway blockage

technical field

The invention relates to the technical field of medical devices, in particular to a device for dredging airway obstructions and a connecting piece.

Background technique

Asphyxiation caused by airway obstruction, if first aid is not given within 4-6 minutes, will often cause respiratory arrest and be fatal; even if life is saved, it will often cause irreversible damage due to prolonged hypoxia. Therefore, during the rescue, it is necessary to race against time to remove the airway obstruction caused by various reasons, to make the airway unobstructed, and to ensure the timely and safe evacuation of the wounded. It provides an opportunity for the next step of treatment of the wounded.

At present, "Heimlich's" is usually used to first aid patients with airway obstruction. However, the general public usually cannot implement "Heimlich's" first aid correctly without training, resulting in choking and airway obstruction. of patients died.

Contents of the invention

The technical problem to be solved by the present invention is to provide a device for dredging obstructions in the respiratory tract that is simple in structure, easy to operate and effective. Backup device and safety guarantee in the event that the "Heimlich" rescue method cannot be effectively implemented or there is no one else around to help. Moreover, if the situation of respiratory obstruction and suffocation occurs, the dredging device can be used to try to save oneself without the help of other people around.

Another technical problem to be solved by the present invention is to provide a connection piece for the above-mentioned dredging device.

In order to solve the above-mentioned technical problems, the technical solution adopted in the invention is to provide a dredging device for airway blockages, the dredging device includes a flexible airbag, a connector and a mask connected in sequence; the inside of the flexible airbag has an air storage cavity , the top of the telescopic airbag is sealed and the bottom has an opening communicating with the air storage cavity; the upper side of the connecting piece is in sealing connection with the opening, and the connecting piece has a first one-way valve and a second one-way valve. One-way valve; the first gas outlet end of the first one-way valve communicates with the air storage cavity, the second air intake end of the second one-way valve communicates with the air storage cavity, and the second gas outlet end It communicates with the outside world; the upper side of the mask is sealingly connected with the first air inlet end of the first one-way valve, and the lower side of the mask has a flexible ring pad for fitting with the face.

By adopting the dredging device of the above technical solution, the flexible annular cushion of the mask can surround the mouth of the asphyxiated patient and fit closely with the face, thereby connecting the patient's airway; then hold the mask with one hand to keep the seal between the mask and the face, Repeatedly pressing down and stretching the telescopic airbag with one hand can quickly remove the blockage in the patient's airway; during the process of compressing the telescopic airbag, the gas in the air storage cavity will be discharged from the second one-way valve to the outside world, but cannot enter the patient's respiratory tract through the first one-way valve; during the stretching process of the telescopic airbag, the volume of the air storage cavity increases, and the second one-way valve can prevent the outside gas from flowing into the storage chamber. In the air cavity, a negative pressure is formed in the air storage cavity, that is, the air pressure in the air storage cavity is lower than the air pressure in the patient's airway at this time, so that the air pressure in the airway can form an outward thrust on the obstruction, thereby removing the obstruction.

In the device for clearing airway obstruction provided by the present invention, the connecting piece has a plurality of second one-way valves, and the plurality of second one-way valves are arranged around the first one-way valve. By arranging a plurality of second one-way valves, the discharge speed of the gas in the gas storage cavity during the compression of the telescopic airbag can be accelerated, which is beneficial to improving the efficiency of pressing down the telescopic airbag.

In the dredging device for airway obstruction provided by the present invention, the connecting piece has a chassis, and the chassis is provided with a central cylinder that penetrates up and down; the first one-way valve is a hollow structure made of elastic material, which includes The deformation part and the first base part are connected, the first gas outlet end is at least three first slits opened at the top of the deformation part, and one end extending toward the center of the at least three first slits meets at the same One point, the first air inlet is a first air hole opened in the middle of the first base; the first base extends into the central cylinder and the outside of the first base is connected to the central The inner side of the cylinder is sealed and connected, and the lower end of the central cylinder is sealed and connected with the upper side of the mask; the deformation part is exposed from the central cylinder and extends into the air storage cavity; when the gas flows from When the first air hole flows in, the pressure in the deformed portion gradually increases so that the deformed portion expands and deforms, so that the at least three first slits are opened, thereby allowing the air on the side of the first air hole. Gas flows into the gas storage cavity; when the gas flowing in from the first vent hole decreases or disappears, the pressure in the deformation part decreases or becomes zero, and the deformation part contracts under its own elasticity to As for the closing of the three first slits, the gas in the gas storage cavity is prevented from flowing out from the first vent hole.

In the dredging device for airway obstruction provided by the present invention, the upper side of the mask has a connecting cylinder with a middle part that penetrates up and down, and the connecting cylinder is inserted into the lower end of the central cylinder from bottom to top. The outside of the cylinder is in sealing connection with the inside of the central cylinder.

In the dredging device for airway obstruction provided by the present invention, the upper side of the chassis is provided with a first peripheral side wall surrounding the central cylinder, and the upper end of the first peripheral side wall shrinks inward to form a stop edge; The telescopic airbag has a second peripheral side wall made of elastic material, and the second peripheral side wall has multiple layers of outwardly protruding folds; the first peripheral side wall wraps the second peripheral side The lowermost fold of the wall, the stop edge covering the upper side of the lowermost fold. In this way, the stability of the connection between the connecting piece and the stretchable airbag is ensured, and the separation of the connecting piece and the stretchable airbag is prevented.

In the dredging device for airway obstructions provided by the present invention, a plurality of reinforcing strips are provided on the upper side of the chassis, and the opposite ends of each of the reinforcing strips are respectively connected to the inner side of the first peripheral side wall and the outside of the central cylinder. The function of the reinforcement bar is to stabilize the connecting piece, increase the hardness of the connecting piece, and avoid 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 device for dredging airway obstructions provided by the present invention, the top wall of the telescopic airbag is connected with a grippable handle. In this way, the handle can be held to press down or stretch the telescopic airbag, which is convenient for the rescuer to apply force.

In the device for dredging airway obstruction provided by the present invention, the number of the first slits is four, and the four first slits are cross-shaped.

In the dredging device for respiratory blockages provided by the present invention, the connecting piece has a chassis, and the chassis is provided with a peripheral cylinder that penetrates up and down; the second one-way valve is a duckbill valve, and the second one-way valve is a duckbill valve. It includes a connected duckbill and a second base, the second air inlet is a second air hole opened in the middle of the second base, and the second air outlet is a hole located in the duckbill The second gap; the outside of the second base is sealed and connected to the inside of the peripheral cylinder, and the second vent hole of the second base communicates with the air storage cavity; the duckbill extends into the The lower end of the peripheral cylinder communicates with the outside; when the gas flows in from the second vent hole, the pressure in the duckbill gradually increases so that the duckbill expands and deforms, so that Opening the second gap, thereby allowing the gas in the gas storage cavity to be discharged to the outside; when the gas flowing in from the second vent hole decreases or disappears, the pressure in the deformation portion decreases or becomes zero The duckbill shrinks under the action of its own elasticity so that the second slit closes, thereby preventing outside air from flowing into the air storage cavity from the second vent hole.

In the device for dredging airway obstruction provided by the present invention, the connecting part is an integrally formed part made of elastic material. The connecting part is an integrally formed part, which can ensure good airtightness of the connecting part itself, and is conducive to forming a negative pressure in the air storage cavity of the telescopic airbag.

In the device for dredging airway obstruction provided by the present invention, the mask, the connecting piece and the telescopic airbag are integrated.

In the device for dredging airway obstructions provided by the present invention, the telescopic airbag does not have a vent hole directly communicating with the outside world.

In order to solve the above-mentioned another technical problem, the technical solution adopted by the invention is to provide a connecting piece for dredging device, the connecting piece includes a chassis and a first one-way valve and a second one-way valve arranged on the chassis ; The first one-way valve and the second one-way valve allow airflow to pass in opposite directions; the connecting piece is an integral molding made of elastic material.

In the connector provided by the present invention, the connector has one first one-way valve and multiple second one-way valves, and multiple second one-way valves are arranged around the first one-way valve .

In the connector provided by the present invention, the chassis is provided with a central cylinder that penetrates up and down; the first one-way valve is a hollow structure, which includes a connected deformation part and a first base, and the first one-way valve The first air outlet and the second vent hole are respectively provided on the deformation part and the first base; the first air outlet is at least three first slits opened at the top of the deformation part, and the at least One end extending toward the center of the three first slits converges at the same point; the first air inlet is a first air hole opened in the middle of the first base.

In the connector provided by the present invention, the second one-way valve is a duckbill valve, the second one-way valve includes a connected duckbill and a second base, and the second air outlet of the second one-way valve The end and the second air inlet are respectively arranged on the duckbill and the second base; the second air inlet is a second air hole opened in the middle of the second base; the second air outlet is The second slit is provided at the duckbill; the duckbill and the deformed part respectively face opposite two sides of the chassis.

In the connector provided by the present invention, the dredging device is the dredging device as described above.

Implementing the dredging device of the present invention can at least achieve the following beneficial effects: the dredging device includes sequentially connected flexible airbags, connectors and masks; the inside of the flexible airbag has an air storage cavity, the top of the flexible airbag is sealed and the bottom is closed. It has an open opening communicating with the air storage cavity; the upper side of the connecting piece is in sealing connection with the opening, and the connecting piece has a first one-way valve and a second one-way valve; the first one-way valve The first air outlet port of the second check valve communicates with the air storage cavity, the second air intake end of the second check valve communicates with the air storage cavity, and the second air outlet port communicates with the outside world; the upper side of the mask It is sealingly connected with the first air inlet end of the first one-way valve, and the lower side of the mask has a flexible annular cushion for fitting with the face. When using the dredging device, the flexible annular cushion of the mask can surround the mouth of the asphyxiated patient and fit closely with the face, thereby connecting the patient's airway; then hold the mask with one hand to keep the seal between the mask and the face, and quickly The action of repeatedly pressing down and stretching the telescopic airbag can pull out the blockage in the patient's airway. In this way, the dredging device can be used as a backup device and safety guarantee when the Heimlich rescue method is invalid or there is no help from other people around in the case of infarction and suffocation rescue.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only Embodiments of the invention, for those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings on the premise of not paying creative work:

Fig. 1 is the three-dimensional combined schematic view of the dredging device provided by the present embodiment;

Fig. 2 is the three-dimensional exploded schematic view (1) of the dredging device provided by the present embodiment;

Fig. 3 is the three-dimensional exploded schematic view (two) of the dredging device provided by the present embodiment;

Fig. 4 is a schematic diagram of the combination of the connecting piece and the stretchable airbag provided in this embodiment.

Description of the reference numerals in the detailed description:

detailed description

In order to facilitate the understanding of the invention, the invention will be described more fully below with reference to the associated drawings. Typical embodiments of the invention are shown in the drawings. However, the invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be thorough.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the invention is for the purpose of describing specific embodiments only, and is not intended to limit the invention.

This embodiment provides a device for dredging airway obstructions. Referring to FIG. 1 , FIG. 1 is a three-dimensional schematic diagram of the dredging device provided in this embodiment. As shown in FIG. 1 , the dredging device includes a stretchable airbag 3 , a connector 2 and a mask 1 connected in sequence. Referring to Fig. 2, Fig. 2 is the three-dimensional exploded schematic diagram (1) of the dredging device provided by the present embodiment, as can be seen in Fig. 2, the inside of the telescopic air bag 3 has an air storage cavity, and the top of the telescopic air bag 3 Sealed and the bottom has an opening 32 communicating with the air storage cavity. In this embodiment, the upper side of the connector 2 is sealed and connected to the opening 32. Specifically, refer to FIG. 3. FIG. It can be seen in the figure that the connecting member 2 is made of elastic material, and has a chassis 23, and the upper side of the chassis 23 is provided with an annular first peripheral side wall 24, and the first peripheral side wall 24 of the first peripheral side wall The upper end shrinks inwardly to form a stop edge 241, and the stretchable airbag 3 has a second peripheral side wall 33 made of elastic material, and the second peripheral side wall 33 has multiple layers of outwardly protruding folds. The inner diameter of the stop edge 241 is smaller than the fold 331 of the lowermost layer of the flexible airbag 3. Since the flexible airbag 3 and the connector 2 are all made of elastic materials, the lowermost layer of the flexible airbag 3 The folds 331 can enter into the bayonet formed by the blocking edge 241 through deformation. The telescopic airbag 3 does not have a vent hole directly communicating with the outside world. Referring to FIG. 4, FIG. 4 is a schematic diagram of the combination of the connecting piece 2 and the telescopic airbag 3 provided in this embodiment. As shown in FIG. 4, when the connecting piece 2 and the flexible airbag 3 are connected and combined, the second The peripheral side wall 33 is inserted into the first peripheral side wall 24, the first peripheral side wall 24 covers the lowermost fold 331 of the second peripheral side wall 33, and the stop edge 241 covers on the upper side of the lowermost fold 331 . In this way, the stability of the connection between the connecting piece 2 and the stretchable airbag 3 is ensured, and the separation of the connecting piece 2 and the stretchable airbag 3 is prevented. At the same time, the outer side of the second peripheral side wall 33 is in close contact with the inner side of the first peripheral side wall 24 to ensure good airtightness between the connecting member 2 and the telescopic airbag 3 . In this embodiment, the connecting piece 2 has a first one-way valve 21, and the first gas outlet end of the first one-way valve 21 is connected to the air storage cavity. For details, please continue to refer to FIG. 3, the The chassis 23 is provided with a central cylinder 26 that penetrates up and down and is surrounded by the first peripheral side wall 24. The first one-way valve 21 is a hollow structure made of elastic material, which includes a connected deformation part 212 and the first base, the first air outlet is four first slits 2121 opened at the top of the deformation part 212, the four first slits 2121 are cross-shaped, and the four first slits 2121 The ends extending toward the center meet at the same point. Certainly, in some other embodiments, the number of the first slits 2121 on the first one-way valve 21 may be 3, 5 or 6, and so on. The first air inlet is a first air hole opened in the middle of the first base; The inner side of the cylinder 26 is sealed and connected, and the lower end of the central cylinder 26 is sealed and connected with the upper side of the mask 1; the deformation part is exposed to the central cylinder 26 and extends into the air storage cavity . It can be understood that, when the gas flows in from the first vent hole, the pressure inside the deformed portion gradually increases so that the deformed portion expands and deforms, so that the four first slits 2121 are opened, thereby allowing The gas on the side of the first vent hole flows into the gas storage cavity; when the gas flowing in from the first vent hole decreases or disappears, the pressure in the deformation part decreases or becomes zero, and the deformation part Under the action of its own elasticity, it shrinks 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 piece 2 also has a second one-way valve 22 , the second inlet end of the second one-way valve 22 communicates with the air storage cavity, and the second air outlet end communicates with the outside world. Specifically, please continue to refer to FIG. 3 , the chassis 23 is provided with a peripheral cylinder 25 that penetrates up and down and is surrounded by the first peripheral side wall 24; the second one-way valve 22 is a duckbill valve, and the first The two one-way valves 22 include a connected duckbill 222 and a second base 221, the second air inlet is a second air hole in the middle of the second base 221, and the second air outlet is Set in the second gap 2221 of the duckbill 222; the outside of the second base 221 is in sealing connection with the inside of the peripheral cylinder 25, and the second vent hole of the second base 221 is connected with the gas storage The cavities are connected; see FIG. 2 , the duckbill 222 protrudes into the peripheral cylinder 25 , and the lower end of the peripheral cylinder 25 communicates with the outside. It can be understood that, when gas flows in from the second ventilation hole, the pressure in the duckbill 222 gradually increases so that the duckbill 222 expands and deforms, so that the second slit 2221 opens. , so as to allow the gas in the gas storage cavity to be discharged to the outside; when the gas flowing in from the second vent hole decreases or disappears, the pressure in the deformed portion decreases or becomes zero, and the duckbill 222 Under the action of its own elasticity, it shrinks so that the second gap 2221 closes up, thereby preventing outside gas from flowing into the gas storage cavity from the second vent hole. In this embodiment, the upper side of the mask 1 is in sealing connection with the first air inlet end of the first one-way valve 21 . Specifically, referring to FIG. 3 , the upper side of the face mask 1 has a connecting cylinder 12 whose middle part penetrates up and down. When the mask 1 and the connector 2 are combined, the connecting cylinder 12 is inserted into the lower end inside of the central cylinder 26 from bottom to top, and the outside of the connecting cylinder 12 is connected to the central cylinder. 26 inside sealed connection. Referring to Fig. 2 and Fig. 3, the lower side of the mask 1 has a flexible annular pad 11 for fitting the face.

When adopting the dredging device provided in this embodiment to rescue a suffocation patient, first surround the mouth of the suffocation patient with the flexible annular pad 11 of the mask 1 and closely fit the face to connect the patient's airway; then hold the mask 1 with one hand to Keep the seal between the mask 1 and the face, and repeat the actions of pressing down and stretching the telescopic airbag 3 with one hand, so that the blockage in the patient's airway can be quickly drawn out. It should be explained that during the compression process of the telescopic airbag 3, the flow direction of the air flow is from the second one-way valve 22 from the inside of the telescopic airbag 3 to the outside of the telescopic airbag 3, and the first one-way valve 21 is tightly closed, that is to say , the gas in the air storage cavity will be discharged to the outside from the second one-way valve 22, and cannot enter the patient's respiratory tract through the first one-way valve 21; The volume increases, and the second slit 2221 of the second one-way valve 22 is tightly closed to prevent the outside gas from flowing into the gas storage cavity, thereby forming a negative pressure in the gas storage cavity, that is, the current in the gas storage cavity The air pressure is lower than the air pressure in the airway of the patient, and the flow direction of the airflow is from the first one-way valve 21 to the inside of the expandable airbag 3 from the expandable airbag 3, so that the air pressure in the airway can form an outward thrust on the obstruction, so that the Obstructions are discharged from the first one-way valve 21 into the telescopic air bag 3 , and the closed telescopic air bag 3 can collect part of the debris in the oral cavity or esophagus to avoid residual reflux in the telescopic air bag 3 .

To sum up, by using the dredging device, it is only necessary to repeat simple stretching operations to quickly and effectively rescue patients with respiratory obstruction and suffocation. In this way, when the "Heimlich" rescue method cannot be effectively implemented, we can use the dredging device to quickly and effectively rescue patients with respiratory obstruction and suffocation. Moreover, if the situation of respiratory obstruction and suffocation occurs, the dredging device can be used to implement effective self-rescue without the help of other people around.

It should be pointed out that during the compression process of the telescopic airbag 3, the gas in the air storage cavity of the telescopic airbag 3 is compressed, and the air pressure in the air storage cavity increases, and the deformed portion of the first check valve 21 Pressurized and further compressed, so that the first slit 2121 of the first one-way valve 21 is closed more tightly, and the gas in the air storage cavity is better prevented from flowing into the patient's respiratory tract through the first one-way valve 21 Inside. Similarly, during the stretching process of the telescopic airbag 3, the air pressure in the air storage cavity decreases, and the duckbill 222 of the second check valve 22 is further contracted under the pressure of the external air pressure, so that all The second slit 2221 of the second direction valve is closed more tightly, which can better prevent the outside gas from flowing into the gas storage cavity, so as to form a higher and more stable negative pressure in the gas storage cavity .

It is worth mentioning that four connected first slits 2121 are provided on the deformed portion of the gas outlet end of the first one-way valve 21, which can make it easier to open the gas outlet end of the first one-way valve 21 (compared to Compared with ordinary duckbill valve), it is beneficial to discharge the obstruction in the patient's respiratory tract.

It should be noted that, when using the dredging device, the flexible annular pad 11 can simultaneously surround the mouth (or mouth and nose) of the asphyxiated patient. Moreover, the flexible annular cushion 11 can be adapted to different face shapes so that the mask 1 can closely fit the faces of different patients, ensuring good airtightness between the mask 1 and the patient's face. In addition, the flexible annular pad 11 can be used as a buffer during compression to avoid injuries to the patient's face.

Further, the connecting piece 2 is an integral molded piece made of elastic material. That is to say, the chassis 23 , the first peripheral side wall 24 , the central cylinder 26 , the peripheral cylinder 25 , the first one-way valve 21 and the second one-way valve 22 are integrally formed. This can ensure that the airtightness of the connecting piece 2 itself is good, thereby ensuring that a stable negative pressure can be formed in the air storage cavity.

Further, the mask 1, the connector 2 and the telescopic airbag 3 are integrated, and the mask 1, the connector 2 and the telescopic airbag 3 are not detachable, so no assembly is required before use, which is convenient for timely use at the first time . At the same time, it prevents the detachment between the mask 1, the connecting piece 2 and the stretchable airbag 3 during use.

Further, referring to FIG. 3 , the connecting member 2 has a plurality of second one-way valves 22 arranged around the first one-way valve 21 . Here, by arranging a plurality of second one-way valves 22 , the discharge speed of the gas in the air storage cavity during the compression process of the telescopic airbag 3 can be accelerated, which is beneficial to improve the efficiency of pressing down the telescopic airbag 3 .

Further, referring to FIG. 3 , a plurality of reinforcement strips 27 are provided on the upper side of the chassis 23, and the opposite ends of each reinforcement strip 27 are respectively connected to the inner side of the first peripheral side wall 24 and the central outside of the barrel 26. Here, the function of the reinforcing strip 27 is to stabilize the connecting piece 2, increase the hardness of the connecting piece 2, and avoid the deformation of the first one-way valve 21 or the second one-way valve 22 caused by the excessive deformation of the connecting piece 2 or the unstable connection between components. .

Further, a handle 31 that can be grasped is connected to the top wall of the telescopic airbag 3 . In this way, the handle 31 can be held to press down or stretch the telescopic airbag 3, which is convenient for the rescuer to apply force. Of course, in some other embodiments, the handle 31 can also be replaced by a handle, which is also beneficial for the rescuer to press down and pull the expandable airbag 3 .

Embodiments of the invention have been described above in conjunction with the accompanying drawings, but the invention is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative, rather than restrictive. Under the enlightenment of the invention, without departing from the purpose of the invention and the scope of protection of the claims, many forms can also be made, and these all belong to the protection of the invention.

Claims (17)

1. A device for dredging airway obstruction, characterized in that, said device for dredging comprises a flexible airbag (3), a connector (2) and a face shield (1) connected in sequence; The inside of the telescopic air bag (3) has an air storage cavity, the top of the telescopic air bag (3) is sealed and the bottom has an opening (32) communicating with the air storage cavity; The upper side of the connecting piece (2) is in sealing connection with the opening (32), and the connecting piece (2) has a first one-way valve (21) and a second one-way valve (22); The first gas outlet end of a one-way valve (21) communicates with the air storage cavity, the second air intake end of the second one-way valve (22) communicates with the air storage cavity, and the second gas outlet end communicates with the air storage cavity. communicate with the outside world; The upper side of the mask (1) is sealingly connected with the first air inlet port of the first one-way valve (21), and the lower side of the mask (1) has a flexible annular pad ( 11). 2. The dredging device for airway obstruction according to claim 1, characterized in that, the connector (2) has a plurality of the second one-way valves (22), and a plurality of the second one-way valves (22) is arranged around the first one-way valve (21). 3. The device for dredging airway obstructions according to claim 1, characterized in that, the connecting piece (2) has a chassis (23), and the chassis (23) is provided with a central cylinder (26) that penetrates up and down ; The first one-way valve (21) is a hollow structure made of elastic material, which includes a connected deformation part (212) and a first base, and the first gas outlet is opened in the deformation part ( 212) at least three first slits (2121) at the top end, the ends extending to the center of the at least three first slits (2121) converge at the same point, and the first air inlet is opened on the first A first ventilation hole in the middle of a base; the first base extends into the central cylinder (26) and the outside of the first base is sealed in connection with the inside of the central cylinder (26), so The lower end of the central cylinder (26) is sealed and connected to the upper side of the mask (1); the deformation part is exposed to the central cylinder (26) and extends into the air storage cavity; when the gas When flowing in from the first air hole, the pressure inside the deformed part gradually increases so that the deformed part expands and deforms, so that the at least three first slits (2121) are opened, thereby allowing the first The gas on the side of the vent hole flows into the gas storage cavity; when the gas flowing in from the first vent hole decreases or disappears, the pressure in the deformation part decreases or becomes zero, and the deformation part is Under the action, it shrinks so that the three first slits (2121) are closed, thereby preventing the gas in the gas storage cavity from flowing out from the first vent hole. 4. The device for dredging airway obstructions according to claim 3, characterized in that, the upper side of the mask (1) has a connecting cylinder (12) with a middle part that penetrates up and down, and the connecting cylinder (12) is from bottom to bottom. The upper part is inserted into the inner side of the lower end of the central cylinder (26), and the outer side of the connecting cylinder (12) is sealingly connected with the inner side of the central cylinder (26). 5. The device for dredging airway obstructions according to claim 3, characterized in that, the upper side of the chassis (23) is provided with a first peripheral side wall (24) surrounding the central cylinder (26), The upper end of the first peripheral side wall (24) shrinks inwardly to form a stop edge (241); the flexible airbag (3) has a second peripheral side wall (33) made of elastic material, and the second peripheral side wall (33) is made of elastic material. The peripheral sidewall (33) has multiple layers of outwardly protruding folds; the first peripheral sidewall (24) wraps the lowermost fold (331) of the second peripheral sidewall (33), so The stop edge (241) covers the upper side of the lowermost fold (331). 6. The dredging device for airway obstruction according to claim 5, characterized in that, the upper side of the chassis (23) is provided with a plurality of reinforcement strips (27), and each of the reinforcement strips (27) is opposite to each other. The two ends of the first peripheral side wall (24) are respectively connected to the inner side of the central cylinder (26) and the outer side. 7 . The device for dredging airway obstructions according to claim 1 , characterized in that, a handle ( 31 ) that can be grasped is connected to the top wall of the telescopic airbag ( 3 ). 8 . The device for dredging airway obstructions according to claim 3 , characterized in that, the number of the first slits ( 2121 ) is four, and the four first slits ( 2121 ) are cross-shaped. 9. The device for dredging airway obstructions according to claim 1, characterized in that, the connecting piece (2) has a chassis (23), and the chassis (23) is provided with a peripheral cylinder (25) penetrating up and down ; The second one-way valve (22) is a duckbill valve, and the second one-way valve (22) includes a connected duckbill (222) and a second base (221), and the second air intake The end is the second ventilation hole opened in the middle of the second base (221), and the second air outlet is the second slit (2221) located in the duckbill (222); the second base The outer side of (221) is in sealing connection with the inner side of the peripheral cylinder (25), and the second vent hole of the second base (221) communicates with the air storage cavity; the duckbill (222) extends into the peripheral cylinder (25), the lower end of the peripheral cylinder (25) communicates with the outside; when the gas flows in from the second vent hole, the pressure in the duckbill (222) gradually increase so that the duckbill (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 into the pores decreases or disappears, the pressure in the deformed portion decreases or becomes zero, and the duckbill (222) shrinks under its own elasticity so that the second slit (2221) closes, thereby preventing External gas flows into the gas storage cavity from the second vent hole. 10. The device for dredging airway obstructions according to claim 1, characterized in that, the connecting piece (2) is an integral molded piece made of elastic material. 11. The device for dredging airway obstruction according to claim 1, characterized in that, the mask (1), the connecting piece (2) and the telescopic airbag (3) are integrated. 12. The device for dredging airway obstructions according to claim 1, characterized in that the telescopic air bag (3) does not have a vent hole directly communicating with the outside world. 13. A connecting piece for dredging device, characterized in that, said connecting piece (2) comprises a chassis (23) and a first one-way valve (21) and a second one-way valve (21) arranged on said chassis (23) One-way valve (22); the first one-way valve (21) and the second one-way valve (22) allow airflow to pass in the opposite direction; the connecting piece (2) is integrally formed by elastic material pieces. 14. The connector according to claim 13, characterized in that, the connector (2) has one first one-way valve (21) and a plurality of second one-way valves (22), more The second one-way valve (22) is arranged around the first one-way valve (21). 15. The connector according to claim 14, characterized in that, the chassis (23) is provided with a central cylinder (26) that penetrates up and down; the first one-way valve (21) is a hollow structure, which includes The connected deformation part (212) and the first base part, the first air outlet end and the second ventilation hole of the first one-way valve (21) are respectively provided on the deformation part (212) and the first base part; The first air outlet is at least three first slits (2121) opened at the top of the deformation part (212), and one end extending toward the center of the at least three first slits (2121) meet at the same point ; The first air inlet is a first air hole opened in the middle of the first base. 16. The connector according to claim 15, characterized in that, the second one-way valve (22) is a duckbill valve, and the second one-way valve (22) comprises a connected duckbill (222) ) and the second base (221), the second air outlet and the second air inlet of the second one-way valve (22) are respectively located at the duckbill (222) and the second base (221); The second air inlet is a second air hole opened in the middle of the second base (221); the second air outlet is a second slit (2221) located in the duckbill (222); The duckbill part (222) and the deformed part (212) face opposite two sides of the chassis (23) respectively. 17. The connector according to claim 15, characterized in that, the dredging device is the dredging device as claimed in claim 1.

Images