Choking prevention device

Abstract

The utility model discloses a kind of anti-choking instruments, including shell assembly, the shell assembly is equipped with face guard, negative pressure assembly is equipped in the shell assembly, the shell assembly includes hollow upper pipe body and lower pipe body, the upper pipe body is connected in lower pipe body, the lower pipe body is connected in face guard;Air inlet check valve is equipped between the lower pipe body and face guard, air outlet check valve is equipped in the air inlet check valve side;The negative pressure assembly includes the piston rod that can be moved up and down, locking mechanism is equipped on the piston rod, first sealing ring is equipped between the piston rod and lower pipe body, the bottom end of the piston rod is abutted on air inlet check valve;The bottom end of the piston rod is equipped with reset slot, first elastic member is equipped in the reset slot, and the first elastic member is abutted on lower pipe body.The utility model is simple in structure, convenient to assemble, reduce production and maintenance cost, improve product stability and reliability.

Description

Technical Field

[0001] This utility model relates to the field of anti-choking devices, and in particular to an anti-choking device. Background Technology

[0002] An airway obstruction device is an emergency rescue tool used to quickly remove foreign objects from the airway in cases of sudden choking. This device uses a sealed mask that fits snugly against the mouth and nose and an internal negative pressure system to instantly create suction, drawing out food, foreign objects, etc., stuck in the airway and restoring normal breathing. Suitable for high-risk groups such as infants, the elderly, and patients with swallowing difficulties, it is portable, easy to operate, non-invasive, and safe, making it an appropriate emergency protective device for homes, schools, and public places.

[0003] Existing utility model patent CN220275679U discloses a portable emergency anti-asphyxiation device that automatically removes foreign objects obstructing the airway. The device includes a suction unit and a mask. The suction unit comprises a housing, a power unit, and a piston module. The power unit drives the piston module to move within the housing, generating negative pressure to remove the foreign object. Suction is automatically generated by pressing a trigger button. The product is easy and simple to operate, quickly clearing airway obstructions. Because the suction is controlled by a compression spring inside the device and a stop on the piston rod, the structure is simple and reliable, ensuring stable suction each time and preventing inconsistencies due to operator error. Compared to existing manual products on the market that require two hands to operate, this device offers numerous advantages, including safety, ease of operation, and stable effectiveness. However, with this structural design, the shell is a single piece, the spring is placed between the pressing sleeve and the tubular structure, and the side of the pressing sleeve extends all the way to the spring, making it difficult to disassemble and maintain. The tubular structure needs to leave enough space to accommodate the spring and the pressing sleeve, requiring more material. This is not conducive to the miniaturization and lightweight design of the product, and also increases the manufacturing cost to some extent. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an anti-choking device that has a simple structure, is easy to assemble, reduces production and maintenance costs, and improves product stability and reliability.

[0005] To solve the above-mentioned technical problems, this utility model provides an anti-choking device, including a housing assembly, a face mask on the housing assembly, and a negative pressure assembly inside the housing assembly. The housing assembly includes a hollow upper tube and a lower tube, the upper tube being connected to the lower tube and the lower tube being connected to the face mask. An air inlet one-way valve is provided between the lower tube and the face mask, the air inlet one-way valve controlling the housing assembly to accept air in one direction, and an air outlet one-way valve is provided on one side of the air inlet one-way valve, the air outlet one-way valve controlling the housing assembly to accept air in one direction. The negative pressure assembly includes a piston rod that can move up and down, a locking mechanism on the piston rod, a first sealing ring between the piston rod and the lower tube, and the bottom end of the piston rod abutting against the air inlet one-way valve. A reset groove is provided at the bottom end of the piston rod, and a first elastic element is provided in the reset groove, the first elastic element abutting against the lower tube.

[0006] The piston rod has a support part at the bottom, a sealing plug at the lower end of the support part, a sealing retaining ring extending downward along the outer edge of the support part, and a reset groove between the sealing plug and the sealing retaining ring.

[0007] The support portion is provided with an upwardly extending limiting side plate, the limiting side plate is provided with a limiting flange, the sealing retaining ring is provided with a second sealing ring, and the limiting flange restricts the movement of the second sealing ring.

[0008] The bottom of the lower pipe is provided with a valve fixing component, the valve fixing component is provided with an air inlet, the air inlet one-way valve is provided in the air inlet, the air inlet is provided with an air outlet on one side, and the air outlet one-way valve is provided in the air outlet.

[0009] The locking mechanism includes a locking button and a movable block disposed on the locking button. The locking button drives the movable block to move horizontally. The locking button passes through the upper tube body. The movable block has a movable groove at its center. The piston rod passes through the movable groove. The end of the movable block away from the locking button is provided with a second elastic element, which abuts against the inner wall of the upper tube body.

[0010] The upper tube body is provided with a guide slot, and the piston rod is provided with a guide protrusion, which is slidably disposed in the guide slot.

[0011] The guide convex edge is provided with a stepped portion, and the movable block can be engaged with the stepped portion.

[0012] The piston rod is provided with a top cover at its top end, and the top cover is provided with a downwardly extending guide side. The upper tube body is provided with a guide ring groove, and the guide side is inserted into the guide ring groove.

[0013] The upper tube body is also provided with multiple limiting connecting edges, and the top cover is provided with corresponding limiting slots, and the limiting connecting edges are inserted into the limiting slots.

[0014] The upper tube is equipped with a button cover.

[0015] In use, when a patient experiences an emergency such as suffocation or choking, the rescuer first ensures the mask of the choking device fits snugly against the patient's mouth and nose, presses the locking button to disengage the movable block from the piston rod, and then holds the housing assembly with one hand and grasps the piston rod at the top with the other, quickly pulling the piston rod upwards. The movement of the piston rod creates a strong negative pressure inside, which acts on the patient's mouth and airway through the inlet one-way valve, drawing out the foreign object obstructing the airway. Under the suction, the foreign object is quickly dislodged from the obstruction, clearing the patient's airway. The piston rod is then pushed back to allow air to escape through the outlet one-way valve. After use, the first elastic element drives the piston rod to reset, while the second elastic element causes the locking button and movable block to spring back to their initial state.

[0016] The beneficial effects of this utility model are:

[0017] (1) This utility model has a simple structure, is easy to assemble, reduces production and maintenance costs, and improves product stability and reliability.

[0018] (2) This utility model, through its multiple sealing design, can instantly generate a stable and powerful negative pressure, which can quickly suck out foreign objects stuck in the airway, greatly improving the efficiency of emergency rescue.

[0019] (3) This utility model can restrict and guide the movement of the piston rod, prevent misoperation, and extend the service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a cross-sectional view of the removal of the face mask according to this utility model.

[0022] Figure 3 This is a schematic diagram of the locking mechanism of this utility model.

[0023] Figure 4 This is a schematic diagram of the piston rod of this utility model.

[0024] Figure 5 This is a structural schematic diagram of the valve fixing component of this utility model.

[0025] Figure 6 This is a schematic diagram of the upper tube body of this utility model.

[0026] Figure 7 This is a schematic diagram of the top cover of this utility model.

[0027] In the diagram: 1. Housing assembly; 2. Face mask; 3. Negative pressure assembly; 4. Upper tube; 5. Lower tube; 6. Inlet check valve; 7. Outlet check valve; 8. Piston rod; 9. Locking mechanism; 10. First sealing ring; 11. Reset groove; 12. First elastic element; 13. Support part; 14. Sealing plug; 15. Sealing retaining ring; 16. Limiting side plate; 17. Limiting flange; 18. Second sealing ring; 19. Valve fixing part; 20. Air inlet; 21. Air outlet; 22. Locking button; 23. Movable block; 24. Movable groove; 25. Second elastic element; 26. Guide slot; 27. Guide protrusion; 28. Step part; 29. ​​Top cover; 30. Guide side; 31. Guide ring groove; 32. Limiting connection edge; 33. Limiting slot; 34. Button cover. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] according to Figures 1 to 6 As shown, this utility model discloses an anti-choking device, comprising a housing assembly 1, a face mask 2 mounted on the housing assembly 1, and a negative pressure assembly 3 inside the housing assembly 1. The housing assembly 1 is composed of a hollow upper tube 4 and a lower tube 5, with the upper tube 4 connected to the lower tube 5, and the lower tube 5 connected to the face mask 2, forming a through negative pressure channel. An inlet one-way valve 6 is provided between the lower tube 5 and the face mask 2. This one-way valve controls that air can only enter the housing from the outside, preventing backflow and ensuring the unidirectional nature of the suction. An outlet one-way valve 7 is provided on one side of the inlet one-way valve 6 to control air discharge, thus forming a complete negative pressure suction process. The negative pressure assembly 3 inside the housing includes a piston rod 8 that can move up and down. The bottom end of the piston rod 8 directly abuts against the inlet one-way valve 6. By pulling the piston rod 8 up and down, a vacuum suction can be quickly generated, thereby sucking out foreign objects blocking the airway. To ensure sealing, a first sealing ring 10 is provided between the piston rod 8 and the lower tube 5. A reset groove 11 is provided at the bottom end of the piston rod 8. A first elastic element 12 is provided in the reset groove 11. The elastic element abuts against the lower tube 5 and can automatically reset after the piston rod 8 is pushed.

[0030] The piston rod 8 has a support part 13 at its bottom, and a sealing plug 14 is installed at the lower end of the support part 13. A downwardly extending sealing ring 15 is provided on its outer edge. A second sealing ring 18 is installed on the sealing ring 15 to enhance the contact sealing effect with the lower tube body 5 and prevent air leakage. The reset groove 11 is located between the sealing plug 14 and the sealing ring 15. The structure is compact and reasonable, and the cavity space is effectively utilized. The support part 13 is also provided with an upwardly extending limiting side plate 16. The top of the limiting side plate 16 is provided with a limiting flange 17 to lock the second sealing ring 18, restrict its movement, and prevent the second sealing ring 18 from falling off. The bottom of the lower tube body 5 is provided with a valve fixing part 19 for fixing the one-way valve assembly. The valve fixing part 19 has an air inlet 20 and an air outlet 21. The air inlet one-way valve 6 is installed in the air inlet 20, and the air outlet one-way valve 7 is installed in the air outlet 21.

[0031] A locking mechanism 9 is also provided on the piston rod 8, including a locking button 22 and a movable block 23 passing through the upper tube 4. When the locking button 22 is pressed, it drives the movable block 23 to move horizontally, thereby limiting or releasing the piston rod 8. The movable block 23 has a movable groove 24 in its center, and the piston rod 8 passes through the movable groove 24. A second elastic element 25 is provided on the side of the movable block 23 away from the locking button 22. The second elastic element 25 abuts against the inner wall of the upper tube 4 and has an automatic reset function, so that the locking button 22 and the movable block 23 automatically spring back. The upper tube 4 has a guide slot 26, and the piston rod 8 has a guide protrusion 27 that cooperates with it. The guide protrusion 27 is slidably disposed in the guide slot 26. At the same time, the guide protrusion 27 also has a step 28 for engaging with the movable block 23 to realize the locking operation.

[0032] according to Figure 7 As shown, the piston rod 8 has a top cover 29 at its top end, and a downwardly extending guide side 30 on the top cover 29, which inserts into the guide ring groove 31 inside the upper tube 4 to assist the piston rod 8 in vertical movement and prevent deviation. The upper tube 4 has multiple limiting connecting edges 32, and the top cover 29 also has corresponding limiting slots 33. The slots engage with the connecting edges to prevent the piston rod 8 from rotating. To prevent accidental activation of the locking button 22, a button sleeve 34 is also provided on the outside of the upper tube 4.

[0033] In use, when a patient experiences an emergency such as suffocation or choking, the rescuer first tightly fits the mask 2 of the anti-choking device to the patient's mouth and nose, presses the locking button 22 to disengage the movable block 23 from the piston rod 8, and then holds the housing assembly 1 with one hand and grasps the piston rod 8 at the top with the other, quickly pulling the piston rod 8 upwards. The movement of the piston rod 8 creates a strong negative pressure inside, which acts on the patient's mouth and airway through the inlet one-way valve 6, sucking out the foreign object blocking the airway. Under the suction, the foreign object is quickly dislodged from the obstruction, and the patient's airway is cleared. The piston rod 8 is then pushed to allow gas to escape from the outlet one-way valve 7. After use, the first elastic element 12 drives the piston rod 8 to reset, while the second elastic element 25 causes the locking button 22 and the movable block 23 to spring back to their initial state.

[0034] The beneficial effects of this utility model are:

[0035] (1) This utility model has a simple structure, is easy to assemble, reduces production and maintenance costs, and improves product stability and reliability.

[0036] (2) This utility model, through its multiple sealing design, can instantly generate a stable and powerful negative pressure, which can quickly suck out foreign objects stuck in the airway, greatly improving the efficiency of emergency rescue.

[0037] (3) This utility model can restrict and guide the movement of the piston rod, prevent misoperation, and extend the service life.

[0038] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A choking prevention device, comprising a housing assembly (1), a face mask (2) provided on the housing assembly (1), and a negative pressure assembly (3) provided inside the housing assembly (1), characterized in that: The housing assembly (1) includes a hollow upper tube (4) and a lower tube (5). The upper tube (4) is connected to the lower tube (5), and the lower tube (5) is connected to the face mask (2). An air inlet check valve (6) is provided between the lower tube (5) and the face mask (2). The air inlet check valve (6) controls the housing assembly (1) to take in air in one direction. An air outlet check valve (7) is provided on one side of the air inlet check valve (6). The air outlet check valve (7) controls the housing assembly (1) to take out air in one direction. The negative pressure assembly (3) includes a piston rod (8) that can move up and down. The piston rod (8) is provided with a locking mechanism (9). A first sealing ring (10) is provided between the piston rod (8) and the lower tube body (5). The bottom end of the piston rod (8) abuts against the air intake one-way valve (6). The bottom end of the piston rod (8) is provided with a reset groove (11). A first elastic element (12) is provided in the reset groove (11). The first elastic element (12) abuts against the lower tube body (5).

2. The anti-choking device according to claim 1, characterized in that: The piston rod (8) has a support part (13) at the bottom, a sealing plug (14) at the lower end of the support part (13), a sealing retaining ring (15) extending downward along the outer edge of the support part (13), and a reset groove (11) between the sealing plug (14) and the sealing retaining ring (15).

3. The anti-choking device according to claim 2, characterized in that: The support part (13) is provided with an upwardly extending limiting side plate (16), the limiting side plate (16) is provided with a limiting flange (17), the sealing retaining ring (15) is provided with a second sealing ring (18), and the limiting flange (17) restricts the movement of the second sealing ring (18).

4. The anti-choking device according to claim 1, characterized in that: The bottom of the lower pipe body (5) is provided with a valve fixing part (19), the valve fixing part (19) is provided with an air inlet (20), the air inlet one-way valve (6) is located in the air inlet (20), the air inlet (20) is provided with an air outlet (21) on one side, and the air outlet one-way valve (7) is located in the air outlet (21).

5. The anti-choking device according to claim 1, characterized in that: The locking mechanism (9) includes a locking button (22) and a movable block (23) provided on the locking button (22). The locking button (22) drives the movable block (23) to move horizontally. The locking button (22) passes through the upper tube (4). The movable block (23) has a movable groove (24) in the center. The piston rod (8) passes through the movable groove (24). A second elastic element (25) is provided at one end of the movable block (23) away from the locking button (22). The second elastic element (25) abuts against the inner wall of the upper tube (4).

6. The anti-choking device according to claim 5, characterized in that: The upper tube (4) is provided with a guide slot (26), and the piston rod (8) is provided with a guide protrusion (27), which is slidably disposed in the guide slot (26).

7. The anti-choking device according to claim 6, characterized in that: The guide protrusion (27) is provided with a step (28), and the movable block (23) can be engaged with the step (28).

8. The anti-choking device according to claim 1, characterized in that: The piston rod (8) has a top cover (29) at its top end. The top cover (29) has a downwardly extending guide side (30). The upper tube (4) has a guide ring groove (31). The guide side (30) is inserted into the guide ring groove (31).

9. The anti-choking device according to claim 8, characterized in that: The upper tube (4) is also provided with multiple limiting connecting edges (32), and the top cover (29) is provided with corresponding limiting slots (33), and the limiting connecting edges (32) are inserted into the limiting slots (33).

10. The anti-choking device according to claim 1, characterized in that: The upper tube (4) is provided with a button cover (34).

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