A portable emergency anti-choking device for automatically suctioning out airway obstruction foreign bodies

Abstract

This utility model belongs to the field of medical supplies technology, specifically a portable emergency anti-asphyxiation device for automatically removing foreign objects obstructing the airway. This device utilizes an exhaust groove within the sealing ring groove of the piston and a remaining space, allowing the sealing ring to move up and down, further opening or closing the exhaust groove. This replaces a one-way exhaust valve, offering advantages such as good airtightness, safe and convenient use, and stable effectiveness. The device can be triggered with a single button, is easy to operate, and maintains constant negative pressure. In emergencies, no assistance is needed; the person choking can operate the device themselves. The negative pressure remains within a constant range, preventing pressure fluctuations due to individual operation, thus avoiding insufficient pressure to remove the foreign object or excessive pressure causing secondary injury.

Description

Technical Field

[0001] This utility model belongs to the field of medical supplies technology, specifically relating to a portable emergency anti-asphyxiation device that automatically removes foreign objects obstructing the airway. Background Technology

[0002] Special attention needs to be paid to airway obstruction in children. Elderly people are also prone to airway obstruction due to factors such as neurological degeneration and decreased swallowing ability. If an airway is blocked by a foreign object, it needs to be removed in time, otherwise it may lead to death by suffocation in severe cases.

[0003] Currently, the standard procedure for emergency situations involving airway obstruction is the Heimlich maneuver. The Heimlich maneuver usually requires assistance from others, and the rescuer generally needs to be professionally trained. There are also certain age restrictions for the person being rescued. Improper rescue procedures can easily cause secondary injuries such as fractures and internal organ tears.

[0004] Currently, there are some manual and automatic anti-asphyxiation products on the market. Although they can help clear a completely blocked upper airway under certain circumstances, they also have some drawbacks. They require others to use their hands to manually suction the asphyxiated person, which is difficult for the asphyxiated person to operate on their own or for patients who need additional assistance, such as infants.

[0005] Currently, the suction power of products on the market depends on the force and speed with which the user manually pulls the product. In addition, some automatic products have poor airtightness of one-way valves, making them unsafe and inconvenient to use, and their performance is also unstable. Utility Model Content

[0006] The present invention aims to provide a portable emergency anti-asphyxiation device that automatically removes foreign objects obstructing the airway, solving the technical problems of existing airway obstruction removal products having poor airtightness of the one-way valve, making them unsafe, inconvenient, and unstable in use.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: A portable first-aid anti-asphyxiation device for automatically removing foreign objects obstructing the airway is provided, comprising a piston cylinder, a piston rod disposed within the piston cylinder, a piston mounted on the piston rod, a face mask disposed at the bottom of the piston cylinder, the top of the face mask communicating with the piston cylinder via a one-way valve, the flow direction of the one-way valve being from the face mask to the piston cylinder, a sealing ring groove disposed on the piston, a sealing ring disposed within the sealing ring groove, and remaining space within the sealing ring groove for the sealing ring to move vertically; an exhaust groove disposed within the sealing ring groove, the exhaust groove comprising a first exhaust groove section disposed on the upper part of the inner circumferential surface of the sealing ring groove, and a second exhaust groove section disposed on the inner top surface of the sealing ring groove, the first exhaust groove section communicating with the second exhaust groove section.

[0008] Furthermore, the second exhaust groove section is an inclined groove disposed on the top surface of the sealing ring groove.

[0009] Furthermore, a power spring is provided inside the piston cylinder, located on the lower side of the piston.

[0010] Furthermore, a trigger assembly is provided between the piston rod and the piston cylinder. When the piston rod is pressed down into place inside the piston cylinder, the piston rod is locked by the trigger assembly. When the piston rod is unlocked by the trigger assembly, the piston rod can be pushed upward by the power spring.

[0011] Furthermore, the triggering assembly includes a trigger locking seat disposed on the top of the piston cylinder, a trigger locking mechanism is provided in the trigger locking seat, the trigger locking mechanism includes a locking part, a locking protrusion is provided on the piston rod that locks the lower side of the locking part, a pressing rod part is provided on one side of the trigger locking mechanism for pushing the locking part away from the locking protrusion, and a locking reset spring is provided on the other side.

[0012] Furthermore, the trigger lock seat includes an outer ring seat and an inner ring seat, with a connecting bridge between the outer ring seat and the inner ring seat. The inner ring seat and the connecting bridge have trigger lock grooves corresponding to the trigger lock, and the trigger lock is disposed in the trigger lock groove. The piston rod passes through the trigger lock seat and includes an outer sleeve and an inner rod. The outer sleeve has a vertical groove for avoiding the connecting bridge. The locking protrusion is disposed on the outer wall of the inner rod. The trigger lock seat has a through hole corresponding to the inner rod. The locking part is a ring sleeve fitted onto the inner rod, and a spring sleeve rod for installing the lock return spring is provided on one side of the locking part.

[0013] Furthermore, the trigger lock base is provided with a trigger lock cover for limiting the trigger lock position; the pressing rod is provided with a trigger button; and the top of the piston rod is provided with a pressing plate.

[0014] Furthermore, it also includes an outer sleeve disposed outside the piston cylinder, the piston cylinder and the outer sleeve being integrally formed, a rotatable anti-accidental touch lock sleeve being provided at the top of the outer sleeve, the upper part of the trigger lock cover being placed on the anti-accidental touch lock sleeve, a thrust block being provided inside the trigger button, a limiting baffle corresponding to the thrust block being provided on the peripheral wall of the anti-accidental touch lock sleeve, and an avoidance groove being provided next to the limiting baffle.

[0015] Furthermore, the outer sleeve is provided with a U-shaped hanging bracket.

[0016] Furthermore, a mask fixing plate is provided at the bottom of the piston cylinder, a connecting pipe is provided in the middle of the mask fixing plate, and a conduit connected to the connecting pipe is provided in the mask.

[0017] Compared with existing technologies, the beneficial effects of this utility model are as follows: 1. This portable emergency anti-suffocation device for automatically removing foreign objects obstructing the airway, by setting an exhaust groove in the sealing ring groove of the piston and providing remaining space, allows the sealing ring to move up and down, further opening or closing the exhaust groove, replacing the one-way exhaust valve. This exhaust method has the advantages of good airtightness of one-way exhaust, safety and convenience in use, and stable effect. 2. The device is triggered by one button, is easy to operate, and maintains constant negative pressure. In an emergency, no assistance is needed; the person choking can operate it themselves. The negative pressure is maintained within a constant range, preventing pressure fluctuations caused by individual operation, avoiding insufficient pressure to remove foreign objects, and excessive pressure causing secondary injury. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of an embodiment of the portable emergency anti-asphyxiation device that automatically removes foreign objects obstructing the airway.

[0019] Figure 2 This is a cross-sectional view of the piston cylinder and outer sleeve in one embodiment of the portable emergency anti-asphyxiation device for automatically removing foreign objects obstructing the airway according to this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of an embodiment of the portable emergency anti-asphyxiation device for automatically removing foreign objects obstructing the airway, without the outer sleeve and hanger installed.

[0021] Figure 4 This is a three-dimensional structural diagram of the piston rod and piston in one embodiment of the portable emergency anti-asphyxiation device for automatically removing foreign objects obstructing the airway according to this utility model.

[0022] Figure 5 This is an exploded view of the piston in one embodiment of the portable emergency anti-asphyxiation device for automatically removing foreign objects blocking the airway, according to the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the piston in one embodiment of the portable emergency anti-asphyxiation device for automatically removing foreign objects blocking the airway, according to the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of the power spring, piston cylinder, and outer sleeve in one embodiment of the portable emergency anti-asphyxiation device for automatically removing foreign objects obstructing the airway according to this utility model.

[0025] Figure 8 This is an exploded view of the trigger component in one embodiment of the portable emergency anti-asphyxiation device that automatically removes foreign objects obstructing the airway according to this utility model.

[0026] Figure 9 This is a schematic diagram showing the installation of the trigger lock in the trigger lock seat in one embodiment of the portable emergency anti-asphyxiation device for automatically removing foreign objects from the airway.

[0027] Figure 10 This is a schematic diagram of the piston rod penetrating the trigger assembly in one embodiment of the portable emergency anti-asphyxiation device for automatically removing foreign objects blocking the airway, according to this utility model.

[0028] Figure 11 This is a three-dimensional structural diagram of the piston cylinder and outer sleeve in one embodiment of the portable emergency anti-asphyxiation device for automatically removing foreign objects obstructing the airway according to this utility model.

[0029] Figure 12 This is a schematic diagram of the installation of the trigger lock cover and the anti-accidental activation lock sleeve in one embodiment of the portable emergency anti-asphyxiation instrument for automatically removing foreign objects from the airway, according to this utility model.

[0030] Figure 13 This is a three-dimensional structural diagram of the anti-accidental activation lock sleeve in one embodiment of the portable emergency anti-suffocation device for automatically removing foreign objects obstructing the airway according to this utility model.

[0031] Figure 14 This is an exploded view of the mask, specifically the mask fixing plate, in one embodiment of the portable emergency anti-asphyxiation device for automatically removing foreign objects from the airway, according to this utility model.

[0032] In the diagram, the following components are indicated by labels: piston cylinder 10, power spring 11, piston rod 20, locking protrusion 21, outer sleeve 22, vertical groove 221, inner rod 23, pressing plate 24, piston 30, sealing ring groove 31, first exhaust groove section 311, second exhaust groove section 312, sealing ring 32, face mask 40, face mask fixing plate 41, connecting pipe 411, one-way valve 42, guide tube 43, trigger assembly 50, trigger locking seat 51, outer ring seat 511, inner ring seat 512. 12. Connecting bridge 513, trigger lock groove 514, outer casing through hole 515, through hole 516, trigger lock 52, lock part 521, pressing rod part 522, spring sleeve rod part 523, lock reset spring 53, trigger lock cover 54, trigger button 55, thrust block 551, outer casing 60, connecting ring part 61, inner step 62, anti-accidental touch lock sleeve 70, upper ring sleeve part 71, lower ring sleeve part 72, limit baffle part 721, clearance groove 722, bracket 80. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] In one embodiment, a portable first-aid anti-asphyxiation device that automatically removes foreign objects obstructing the airway is provided, such as... Figure 1-7 As shown, this portable first-aid anti-asphyxiation device for automatically removing airway obstructions includes a piston cylinder 10, which is a cylindrical shape. A piston rod 20 is located inside the piston cylinder 10, and a piston 30 is mounted on the piston rod 20. The piston 30 fits into the interior of the piston cylinder 10. A face mask 40 is located at the bottom of the piston cylinder 10, covering the mouth and nose. The top of the face mask 40 is connected to the interior of the piston cylinder 10 via a one-way valve. The flow direction of the one-way valve is from the face mask 40 to the piston cylinder 10. Figure 5 As shown, the piston 30 is provided with two sealing ring grooves 31, and a sealing ring 32 is provided in each of the two sealing ring grooves 31, as shown. Figure 6 As shown, the sealing ring groove 31 has a remaining space 33 for the sealing ring 32 to move up and down. The remaining space 33 is relative. If the sealing ring 32 is in the upper part of the sealing ring groove 31, its lower area is the remaining space. If the sealing ring 32 is in the lower part of the sealing ring groove 31, its upper area is the remaining space. That is, the width of the sealing ring groove 31 in the vertical direction is greater than the width of the sealing ring 32. An exhaust groove is provided in the sealing ring groove 31. The remaining space 33 is provided so that the sealing ring 32 can move up and down to open or close the exhaust groove.

[0035] Among them, such as Figure 5 As shown, the exhaust groove includes a first exhaust groove section 311 disposed on the upper part of the inner circumferential surface of the sealing ring groove 31, and a second exhaust groove section 312 disposed on the inner top surface of the sealing ring groove 31. The first exhaust groove section 311 and the second exhaust groove section 312 are connected. When the piston rod 20 is pushed, causing the piston 30 to move downwards inside the piston cylinder 10, the sealing ring 32 moves upwards within the sealing ring groove 31 due to friction from the inner wall of the piston cylinder 10. This allows the first exhaust groove section 311 to connect with the space below the piston 30 inside the piston cylinder 10, thus venting the gas from the piston cylinder. When the piston rod 20 moves upwards, causing the piston 30 to move upwards inside the piston cylinder 10, the sealing ring 32 moves downwards within the sealing ring groove 31 due to friction from the inner wall of the piston cylinder 10. This creates a seal between the sealing ring 32 and the inner wall of the piston cylinder 10, and the first exhaust groove section 311 no longer connects with the space below the piston 30 inside the piston cylinder 10. No gas will enter the piston cylinder 10, thus creating a negative pressure space. Since the top of the mask 40 is connected to the inside of the piston cylinder 10 through a one-way valve, the negative pressure inside the piston cylinder 10 will be further drawn out through the mask 40 via the mouth and nose, suitable for automatically removing obstructions in emergency situations.

[0036] This portable emergency anti-asphyxiation device that automatically removes foreign objects obstructing the airway uses an exhaust groove in the sealing ring groove 31 of the piston 30 and a remaining space 33 to allow the sealing ring 32 to move up and down, further opening or closing the exhaust groove. This replaces the one-way exhaust valve. This exhaust method has the advantages of good airtightness, safe and convenient use, and stable effect, which is especially important for medical devices such as portable emergency anti-asphyxiation devices that automatically remove foreign objects obstructing the airway.

[0037] Furthermore, in another embodiment, such as Figure 5 As shown, in this portable emergency anti-asphyxiation device that automatically removes foreign objects blocking the airway, the second exhaust groove section 312 is an inclined groove set on the top surface of the sealing ring groove 31. This makes the end of the exhaust of the second exhaust groove section 312 and the beginning of the air intake of the first exhaust groove section 311 circumferentially offset, reducing airflow interference and making the exhaust smoother.

[0038] Furthermore, in another embodiment, such as Figure 7 As shown, in this portable emergency anti-asphyxiation device that automatically removes foreign objects blocking the airway, a power spring 11 is provided inside the piston cylinder 10, located below the piston 30. When the piston 30 moves to the bottom inside the piston cylinder 10, the power spring 11 is compressed and stores energy, so that the spring force of the power spring 11 can push the piston 30 upward, so that a negative pressure space is automatically formed inside the piston cylinder 10.

[0039] Furthermore, in another embodiment, such as Figure 3 As shown, this portable emergency anti-asphyxiation device for automatically removing airway obstructions has a trigger assembly 50 between the piston rod 20 and the piston cylinder 10. The trigger assembly 50 is used to lock and unlock the piston rod 20's vertical movement. When the piston rod 20 is pressed down into the piston cylinder 10, it is locked by the trigger assembly 50. When the piston rod 20 is unlocked by the trigger assembly 50, it can be pushed upward by the power spring 11. When the piston rod 20 is pressed into the piston cylinder 10, it is locked by the trigger assembly 50 and cannot move upward. After the mask 40 is placed over the mouth and nose, operating the trigger assembly 50 can generate negative pressure to suction out the obstruction in the airway. The trigger assembly 50 makes the device easy to operate.

[0040] like Figure 5 and Figure 6 As shown, a buffer pad is provided on the top of the piston 30. The buffer pad is installed between the piston 30 and the piston rod 20. When the piston 30 moves into position, the buffer pad will touch the trigger lock seat 51 on the top, which will play the role of shock absorption and noise reduction.

[0041] Furthermore, in another embodiment, such as Figure 3 and Figure 8 As shown, in this portable emergency anti-asphyxiation device that automatically removes foreign objects obstructing the airway, the trigger assembly 50 includes a trigger lock seat 51 disposed on the top of the piston cylinder 10. The trigger lock seat 51 is installed on the top of the piston cylinder 10 by screws. A trigger lock 52 is provided in the trigger lock seat 51, and the trigger lock 52 includes a locking part 521, such as... Figure 4 As shown, the piston rod 20 is provided with a locking protrusion 21 that engages with the lower side of the locking part 521. In this embodiment, the locking protrusion 21 is a vertical rib. On one side of the trigger lock 52, there is a pressing rod 522 for pushing the locking part 521 away from the locking protrusion 21. The pressing rod 522 extends from one side so that it can be touched by hand. On the other side of the trigger lock 51, there is a lock return spring 53. When the piston rod 20 is pressed down into the piston cylinder 10, the top of the locking protrusion 21 is engaged with the lower side of the locking part 521. When the locking part 521 is pushed by the pressing rod 522, the locking part 521 moves inward, so that the top of the locking protrusion 21 is no longer engaged with the lower side of the locking part 521. Thus, under the elastic force of the power spring 11, the piston 30 and the piston rod 20 are pushed upward, thereby unlocking.

[0042] Furthermore, such as Figure 9 and Figure 10 As shown, the trigger lock seat 51 includes an outer ring seat portion 511 and an inner ring seat portion 512. Connecting bridge portions 513 are respectively provided on the front and rear sides between the outer ring seat portion 511 and the inner ring seat portion 512, connecting... Figure 8As shown, the inner ring seat 511 and the connecting bridge 513 are provided with trigger lock grooves 514 corresponding to the trigger lock 52, and the trigger lock 52 is disposed in the trigger lock grooves 514; the piston rod 20 passes through the trigger lock seat 51, as shown. Figure 4 As shown, the piston rod 20 includes an outer sleeve 22 and an inner rod 23. The outer sleeve 22 has a vertical groove 221 for avoiding the connecting bridge portion 513, and a locking protrusion 21 is provided on the outer wall of the inner rod 23, which is combined with... Figure 9-10 As shown, two arc-shaped outer sleeve through holes 515 are formed on the trigger lock seat 51 between the outer ring seat 511, the inner ring seat 512, and the connecting bridges 513 on the front and rear sides. The portions of the outer sleeve 22 located on both sides of the vertical groove 221 pass through the outer sleeve through holes 515 on the front and rear sides respectively; Figure 9 As shown, the trigger lock seat 51 has a through hole 516 in the middle corresponding to the inner rod portion 23, and the inner rod portion 23 passes through the through hole 516; as Figure 8-9 As shown, the locking part 521 is a ring sleeve fitted onto the inner rod part 23. The internal hole of the ring sleeve is larger than the width of the inner rod part 23, so that when the locking part 521 is pushed, the locking part 521 can move relative to the inner rod part 23, thereby allowing the locking protrusion 21 and the locking part 521 to be misaligned. When they are misaligned, the locking protrusion 21 is no longer locked on the lower side of the locking part 521. Figure 8 As shown, a spring sleeve rod portion 523 is provided on one side of the locking part 521, on which the locking return spring 53 is installed. The locking return spring 53 is sleeved on the spring sleeve rod portion 523. The locking return spring 53 is located at the rear end of the trigger locking groove 514 and abuts against the inner wall of the outer ring seat portion 511. When the locking part 521 is pushed by the pressing rod portion 522, the locking return spring 53 is compressed. When the locking part 521 is no longer pushed, the locking return spring 53 can apply a restoring force to the locking part 521.

[0043] Furthermore, such as Figure 8-9 As shown, this portable emergency anti-asphyxiation device that automatically removes foreign objects obstructing the airway has a trigger lock cover 54 on the trigger lock base 51 to limit the trigger lock 52. The trigger lock cover 54 is connected to the trigger lock base 51 by screws, and the two clamp the trigger lock 52 in the middle to prevent the trigger lock 52 from falling out. Figure 8-9 As shown, a trigger button 55 is provided on the pressing rod portion 522. The trigger button 55 is connected to the end of the pressing rod portion 522, allowing for operation by pressing the trigger button 55 to control the trigger lock 52. Combined with... Figure 1-4 As shown, a pressing plate 24 is provided at the top of the piston rod 20 for pressing the piston rod 20 downwards.

[0044] Furthermore, in another embodiment, such as Figure 1As shown, this portable emergency anti-asphyxiation device that automatically removes foreign objects obstructing the airway also includes an outer sleeve 60 disposed outside the piston cylinder 10. The piston cylinder 10 and the outer sleeve 60 are integrally formed. The outer sleeve 60 serves as a protective shell and supports other components of the entire device, such as... Figure 2 and Figure 11 As shown, a connecting ring 61 is located on the upper part of the inner wall of the outer sleeve 60. The top of the piston cylinder 10 is integrally formed with the connecting ring 61, and the trigger locking seat 51 is connected to the connecting ring 61 by screws. The outer sleeve 60 also has a button hole corresponding to the trigger button 55. Figure 1 and Figure 12 As shown, a rotatable anti-accidental-touch locking sleeve 70 is provided at the top of the outer sleeve 60, such as... Figure 13 As shown, the anti-accidental-touch lock sleeve 70 includes an upper ring sleeve 71 for manual turning and a lower ring sleeve 72 hidden in the outer sleeve 60. A trigger lock cover 54 is mounted on the anti-accidental-touch lock sleeve 70 and is connected to the trigger lock seat 51 at the bottom by screws. The piston rod 20 passes through the anti-accidental-touch lock sleeve 70 and the trigger lock cover 54. An clearance hole is provided on the trigger lock cover 54 to allow the piston rod 20 to pass through. Figure 9 As shown, a thrust block 551 is provided inside the trigger button 55, such as... Figure 13 As shown, the anti-accidental touch lock sleeve 70 has a limiting baffle 721 corresponding to the thrust block 551 on its peripheral wall. A relief groove 722 is provided next to the limiting baffle 721. Both the limiting baffle 721 and the relief groove 722 are provided on the lower ring sleeve 72. When the anti-accidental touch lock sleeve 70 is rotated by manually turning the upper ring sleeve 71, the limiting baffle 721 can be blocked inside the thrust block 551, so that the trigger button 55 cannot be pressed. When the rotation is performed so that the relief groove 722 faces the thrust block 551, the trigger button 55 can be pressed, thereby realizing the opening and closing of the trigger button 55.

[0045] It can be seen that the trigger button 55 is used to control the movement of the piston rod 20. The anti-accidental touch lock sleeve 70 controls the trigger button 55. When the anti-accidental touch lock sleeve 70 is in the locked state, the trigger button 55 is locked and cannot be pressed, and the piston rod 20 is locked and cannot move. When the anti-accidental touch lock sleeve 70 is in the unlocked state, the trigger button 55 is opened and can be pressed, and the power spring 11 drives the piston rod 20 to move.

[0046] Furthermore, in another embodiment, such as Figure 5As shown, in this portable first aid anti-asphyxiation device that automatically removes foreign objects obstructing the airway, a U-shaped bracket 80 is provided on the outer sleeve 60. The bracket 80 can be installed on a wall or other conspicuous location that is easy to access by screws. The outer sleeve 60 is then secured in the bracket 80. The outer sleeve 60 has protruding areas on both sides corresponding to the bracket 80 to increase the friction between the outer sleeve 60 and the bracket 80.

[0047] Furthermore, in another embodiment, such as Figure 1 and Figure 14 As shown, in this portable emergency anti-asphyxiation device that automatically removes foreign objects obstructing the airway, a mask fixing plate 41 is provided at the bottom of the piston cylinder 10. The mask fixing plate 41 is connected to the bottom of the piston cylinder 10 by screws, and a sealing ring is provided between the mask fixing plate 41 and the piston cylinder 10 to enhance airtightness. Figure 11 As shown, an inner step 62 is provided at the bottom of the inner wall of the outer sleeve 60. The mask fixing plate 41 is snapped under the inner step 62. A connecting pipe section 411 is provided in the middle of the mask fixing plate 41. The one-way valve 42, which connects the top of the mask 40 to the inside of the piston cylinder 10, is installed on the upper side of the connecting pipe section 411. When there is negative pressure inside the piston cylinder 10, the one-way valve 42 allows air to enter; otherwise, it is closed. A conduit 43 is provided in the mask 40, which is connected to the connecting pipe section 411. The lower edge of the conduit 43 has a notch, which facilitates suction from the insertion port.

[0048] Considering that this portable emergency anti-asphyxiation device for automatically removing airway obstructions is a body-worn device, the weight distribution of the mechanism and the rationality of the contact points between the mechanism and the patient are key design issues. This portable emergency anti-asphyxiation device for automatically removing airway obstructions can adapt to the average body size of 10%-99% of the Chinese population (aged 2-70), meeting the needs of the vast majority of users and possessing wide applicability. Different age groups are equipped with masks of different sizes. The tubing 43 allows the negative pressure suction generated in the piston cylinder to be quickly transmitted to the obstruction site at the airway opening. The tubing 43 is available in different sizes to match different sized masks, facilitating use by different users.

[0049] Based on the above embodiments, it can be seen that the portable emergency anti-asphyxiation device that automatically removes foreign objects obstructing the airway mainly consists of two parts: a suction unit composed of a piston rod, piston, piston cylinder, and power spring, and a mask. The piston rod, piston, and piston cylinder of the suction unit work together to generate negative pressure, which can be operated with one hand. By pressing the trigger button 55, suction can be automatically generated, making it safer to use, simple and convenient to operate, and with stable effects.

[0050] This device works on the same principle as the Heimlich maneuver, which uses residual air in the lungs to press on the abdomen to create a positive airflow that expels the obstructing foreign object and restores normal breathing. This device uses a mask to cover the mouth and nose, creating a momentary negative airflow in the patient's upper airway to suction out the obstructing foreign object. Compared to the Heimlich maneuver, it does not require assistance from others, does not require pressing on the chest and abdomen, and carries no risk of sternal fracture or damage to internal organs. It has the following advantages: (1) It is easy to operate, can be triggered with one button, and can be operated by the choking person themselves without the need for assistance in an emergency; (2) The negative pressure is constant, and the negative pressure is kept within a constant range. It will not cause pressure fluctuations due to personal operation, avoiding the situation where the pressure is too low to suction out the foreign object and too high to cause secondary injury.

[0051] It should be noted that, unless otherwise defined, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains, and terms such as those defined in a common dictionary should be interpreted as having a meaning consistent with their meaning in the context of the relevant art. It should also be understood that the above is a description of this disclosure and should not be considered as a limitation thereof. Although several exemplary embodiments of this disclosure have been described, those skilled in the art will readily understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this invention. Therefore, all such modifications are intended to be included within the scope of this disclosure as defined in the claims, and will not be detailed here.

Claims

1. A portable first-aid anti-asphyxiation device for automatically suctioning out foreign objects obstructing the airway, comprising a piston cylinder, a piston rod disposed within the piston cylinder, a piston disposed on the piston rod, a face mask disposed at the bottom of the piston cylinder, the top of the face mask communicating with the piston cylinder via a one-way valve, the flow direction of the one-way valve being from the face mask to the piston cylinder, characterized in that: The piston is provided with a sealing ring groove, and a sealing ring is provided in the sealing ring groove. The sealing ring groove has remaining space for the sealing ring to move up and down. An exhaust groove is provided in the sealing ring groove. The exhaust groove includes a first exhaust groove section provided on the upper part of the inner circumferential surface of the sealing ring groove, and a second exhaust groove section provided on the inner top surface of the sealing ring groove. The first exhaust groove section and the second exhaust groove section are connected.

2. The portable emergency suffocation prevention device for automatically removing foreign objects obstructing the airway as described in claim 1, characterized in that: The second exhaust groove section is an inclined groove located on the top surface of the sealing ring groove.

3. The portable emergency suffocation prevention device for automatically removing foreign objects obstructing the airway as described in claim 1, characterized in that: A power spring is provided inside the piston cylinder, located on the lower side of the piston.

4. The portable emergency anti-choking device of claim 3, wherein: A trigger assembly is provided between the piston rod and the piston cylinder. When the piston rod is pressed down into place inside the piston cylinder, the piston rod is locked by the trigger assembly. When the piston rod is unlocked by the trigger assembly, the piston rod can be pushed upward by the power spring.

5. The portable emergency anti-choking device of claim 4, wherein: The triggering assembly includes a trigger locking seat disposed on the top of the piston cylinder, and a trigger locking mechanism is provided in the trigger locking seat. The trigger locking mechanism includes a locking part, and a locking protrusion is provided on the piston rod to lock the lower side of the locking part. A pressing rod part for pushing the locking part away from the locking protrusion is provided on one side of the trigger locking mechanism, and a locking reset spring is provided on the other side.

6. The portable emergency suffocation prevention device for automatically removing foreign objects obstructing the airway according to claim 5, characterized in that: The trigger lock seat includes an outer ring seat and an inner ring seat, with a connecting bridge between the outer ring seat and the inner ring seat. The inner ring seat and the connecting bridge have trigger lock grooves corresponding to the trigger lock, and the trigger lock is disposed in the trigger lock groove. The piston rod passes through the trigger lock seat and includes an outer sleeve and an inner rod. The outer sleeve has a vertical groove for avoiding the connecting bridge. The locking protrusion is disposed on the outer wall of the inner rod. The trigger lock seat has a through hole corresponding to the inner rod. The locking part is a ring sleeve fitted onto the inner rod, and a spring sleeve rod for installing the lock return spring is provided on one side of the locking part.

7. The portable emergency suffocation prevention device for automatically removing foreign objects obstructing the airway as described in claim 5 or 6, characterized in that: The trigger lock base is provided with a trigger lock cover to limit the position of the trigger lock; the pressing rod is provided with a trigger button; and the top of the piston rod is provided with a pressing plate.

8. The portable, self-contained, emergency anti-choking device of claim 7, wherein: It also includes an outer sleeve disposed outside the piston cylinder, the piston cylinder and the outer sleeve being integrally formed, a rotatable anti-accidental touch lock sleeve being provided on the top of the outer sleeve, the upper part of the trigger lock cover being covered on the anti-accidental touch lock sleeve, a thrust block being provided inside the trigger button, a limiting baffle corresponding to the thrust block being provided on the peripheral wall of the anti-accidental touch lock sleeve, and an avoidance groove being provided next to the limiting baffle.

9. The portable emergency suffocation prevention device for automatically removing foreign objects obstructing the airway according to claim 8, characterized in that: The outer sleeve is equipped with a U-shaped hanging bracket.

10. The portable emergency anti-asphyxiation device for automatically removing foreign objects obstructing the airway according to claim 1, characterized in that: A mask fixing plate is provided at the bottom of the piston cylinder, and a connecting pipe is provided in the middle of the mask fixing plate. A conduit connected to the connecting pipe is provided in the mask.

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