An anti-suffocation device for removing foreign objects obstructing the airway

Abstract

The application discloses a choking-preventing device for removing foreign matter to block an airway, and belongs to the technical field of first-aid medical supplies, which comprises a vertical cylinder arranged vertically, a piston head arranged to slide and seal internally, an end cylinder connected to the end of a trachea which extends laterally from the top end of the vertical cylinder, a face mask arranged with an opening downwardly at the lower side of the end cylinder, and a gas hole arranged at the upper side of the end cylinder and configured with a first one-way air valve and a second one-way air valve. The device avoids operation deviation through a vertical support structure, controls the directional airflow in combination with the one-way valve, directly converts the downward pressure into efficient suction power, solves the problems of the traditional equipment depending on manual fixing, unstable force application direction and low suction efficiency, and is especially suitable for patients in coma or unable to cooperate, and significantly improves the success rate and safety of first aid.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of first-aid medical supplies, and particularly relates to a suffocation-preventing device for removing foreign matter blocking an airway. BACKGROUND

[0002] In the emergency scene of airway foreign matter obstruction, manual suction devices are important rescue tools, but the traditional devices have significant defects. First, most devices lack stable support structures, and the operator needs to manually fix the device during operation, which leads to unstable force direction, easy piston deviation or mask air leakage, and affects the negative pressure suction effect. Second, the fit of the mask to the patient's face is insufficient, especially when the patient is in a supine position, it is difficult to maintain the airtightness of the airflow passage, resulting in reduced foreign matter removal efficiency and even the risk of secondary aspiration. In addition, the operation direction of the traditional device does not conform to the natural force habit of the human body, not only increasing the physical consumption of the rescuer, but also easily causing instrument displacement or patient soft tissue injury due to improper operation. These problems make it difficult for the existing technology to balance efficiency, safety and universality in emergency situations. SUMMARY

[0003] Therefore, the purpose of the present application is to provide a suffocation-preventing device for removing foreign matter blocking an airway, which is simple to use and improves the effectiveness of first aid.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0005] The present application comprises a vertical cylinder placed vertically, the opening of the vertical cylinder faces downward, a piston head is slidably and sealingly arranged in the vertical cylinder, the top of the piston head is connected with a sliding column, the sliding column extends out of the top end of the vertical cylinder and is connected with a handle, a trachea is arranged on the side of the top end of the vertical cylinder, an end cylinder is arranged at the end of the trachea, a mask with an opening facing downward is connected to the lower side of the end cylinder, a gas hole is formed in the upper side of the end cylinder, and a first one-way air valve and a second one-way air valve are further included, the first one-way air valve is located at the gas hole to limit the air flow from the end cylinder to the outside, and the second one-way air valve is located at the communication between the end cylinder and the mask to limit the air flow from the mask to the end cylinder.

[0006] Further, the end cylinder is horizontally arranged, an inner cylinder is coaxially and sealingly arranged in the end cylinder, the inner cylinder extends out of the end of the end cylinder, a through hole is formed in the upper and lower sides of the inner cylinder and communicates with the gas hole and the mask respectively, and the first one-way air valve and the second one-way air valve are respectively located at the positions of the two through holes; rotating the inner cylinder exchanges the positions of the first one-way air valve and the second one-way air valve, so that the device is used for inhalation assistance.

[0007] Further, a support rod is arranged on the lower end of the vertical cylinder and extends inwardly, the support rod extends upwardly and has a guide vertical rod with a rectangular cross section, a sliding hole with a rectangular cross section is formed in the bottom side of the piston head and extends upwardly along the sliding column, and the two inner sides of the sliding hole are respectively slidably and tightly fitted with the two outer sides of the guide vertical rod.

[0008] Further, the top end of the guide vertical rod is provided with a rotating block, the middle part of the side of the guide vertical rod not slidingly fitted with the sliding hole is outwardly provided with a blocking step, the top end of the piston head is provided with a plurality of supporting springs around the sliding column, the top end of the plurality of supporting springs is simultaneously connected with a slide ring, when the piston head is pulled up to the limit distance, the bottom end of the piston head is higher than the bottom end of the rotating block, the piston head is rotated by 180 degrees, the guide vertical rod is slid into the sliding hole again, and the blocking step is arranged on the bottom side of the piston head.

[0009] Further, the bottom end of the vertical cylinder is outwardly threadedly connected with an adjusting cylinder, the adjusting cylinder is in contact with the ground, the adjusting cylinder is rotated to adjust the ground clearance of the vertical cylinder.

[0010] Further, the bottom end of the adjusting cylinder is outwardly provided with a pressing plate facilitating single-hand pressing.

[0011] Further, the face mask is threadedly connected with the end cylinder, and the trachea is threadedly connected with the end cylinder and the vertical cylinder at both ends.

[0012] The beneficial effects of the present application are as follows:

[0013] In the present application, the vertical cylinder is vertically placed on the ground, the piston head is arranged in the vertical cylinder and is slidingly sealed, the top of the piston head is connected with the handle through the sliding column, a hand-operated mechanism is formed, when the vertical cylinder is vertically placed, the bottom of the vertical cylinder is in contact with the ground to form stable support, so that the device is prevented from falling or sliding during operation, the opening of the face mask faces downward and is fitted with the face of the patient when the patient is lying on his back, the vertical layout of the vertical cylinder enables the operator to vertically push and pull the handle when standing or crouching to rescue, so that the device is prevented from deviating due to lateral force, the operator drives the piston to move by pressing downward or pulling upward the handle, the force direction is consistent with the axis of the vertical cylinder, which is in line with ergonomics and is convenient for exerting force; during the first aid process, the piston head moves downward, the internal volume of the vertical cylinder increases, a negative pressure is formed, at this time, the first one-way air valve is closed to prevent external air from entering the end cylinder through the air hole, and the second one-way air valve is opened, so that the gas and foreign matters in the airway of the patient are sucked into the end cylinder and the vertical cylinder through the face mask; the piston head moves upward, the internal volume of the vertical cylinder decreases, the gas is compressed, at this time, the second one-way air valve is closed to prevent the gas flow from flowing back from the end cylinder to the face mask, and the first one-way air valve is opened, so that the compressed gas is discharged to the outside through the air hole, the device is more suitable for force exertion during the first aid process by setting the downward pressing operation as foreign matter extraction, the foreign matter can be quickly extracted by exerting force, and the device is fixed in a stable position by the design that the vertical cylinder is in contact with the ground, so that the operator only needs to focus on pushing and pulling the handle upward and downward, without needing to fix the equipment, and the device is also especially suitable for patients who are unconscious or cannot cooperate.

[0014] Additional advantages, objects, and features of the application will be set forth in part by the description that follows, and in part will become apparent to those skilled in the art upon examination of the following or can be learned from practice of the application. The objectives and other advantages of the application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] To make the objects, technical solutions and advantages of the present application clearer, the present application is described below with the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the device of the embodiment of the present application;

[0017] Figure 2 It is a sectional view of the device of the embodiment of the present application;

[0018] Figure 3 It is a sectional view of the end cylinder and the inner cylinder in the state of absorbing objects of the embodiment of the present application;

[0019] Figure 4 It is a sectional view of the end cylinder and the inner cylinder in the state of blowing air of the embodiment of the present application;

[0020] Figure 5 It is a schematic diagram of the state of the piston head moving downward of the embodiment of the present application;

[0021] Figure 6 It is a schematic diagram of the state of the piston head moving upward of the embodiment of the present application;

[0022] Figure 7 It is a schematic diagram of the state of the piston head rotating of the embodiment of the present application;

[0023] In the drawings, the following marks are used: 1, vertical cylinder; 11, support rod; 12, guide vertical rod; 121, blocking step; 13, rotating square; 14, adjusting cylinder; 141, pressing plate; 2, piston head; 21, support spring; 22, sliding ring; 3, sliding column; 31, sliding hole; 4, handle; 5, air pipe; 6, end cylinder; 61, air hole; 7, face shield; 81, first one-way air valve; 82, second one-way air valve; 9, inner cylinder; 91, through hole. DETAILED DESCRIPTION

[0024] The present application discloses a choking-preventing device for removing foreign matter blocking airway, like Figure 1 , Figure 2 and Figure 3As shown, including vertical cylinder 1, the cylinder 1 is open downward, the cylinder 1 is provided with a piston head 2 sliding seal, the piston head 2 top connected slide column 3, the slide column 3 from the cylinder 1 top end out and connected with handle 4; the cylinder 1 top end side extension is provided with air pipe 5, the air pipe 5 end is provided with end cylinder 6, the end cylinder 6 lower side is connected with opening downward face shield 7, the end cylinder 6 upper side is provided with air hole 61, also includes first one-way valve 81 and second one-way valve 82, the first one-way valve 81 is located at air hole 61, limiting the air flow from the end cylinder 6 to the outside world, the second one-way valve 82 is located at the communication between end cylinder 6 and face shield 7, limiting the air flow from face shield 7 to end cylinder 6.

[0025] In this device, the cylinder 1 is vertically placed on the ground, the inside is provided with a sliding seal piston head 2, the top of the piston head 2 is connected with the handle 4 through the slide column 3, forming a manual operation mechanism, when the cylinder 1 is vertically placed, its bottom is in contact with the ground to form stable support, avoiding the device from falling or sliding during operation, the face shield 7 is open downward, which is in contact with the face of the patient when he is lying on his back, the vertical layout of the cylinder 1 enables the rescuer to stand or crouch when rescuing, and the handle 4 can be pushed and pulled vertically to avoid the device from deviating due to lateral force, the rescuer drives the piston to move by pressing downward or pulling upward the handle 4, the force direction is consistent with the axis of the cylinder 1, which conforms to the ergonomics and is convenient for exerting force; during first aid, the piston head 2 moves downward, the volume of the cylinder 1 increases, forming negative pressure, at this time, the first one-way valve 81 is closed to prevent external air from entering the end cylinder 6 through the air hole 61, and the second one-way valve 82 is opened, the gas and foreign matter in the airway of the patient are sucked into the end cylinder 6 and the cylinder 1 through the face shield 7; the piston head 2 moves upward, the volume of the cylinder 1 decreases, the gas is compressed, at this time, the second one-way valve 82 is closed to prevent the gas flow from flowing back from the end cylinder 6 to the face shield 7, and the first one-way valve 81 is opened, the compressed gas is discharged to the outside through the air hole 61, this device sets the downward pressing operation as foreign matter extraction, which is more suitable for force operation during first aid, and can exert force more quickly to extract foreign matter, and through the design of the vertically placed cylinder 1 in contact with the ground, the device is fixed in a stable position, the operator only needs to focus on pushing and pulling the handle 4 up and down, without the need to fix the equipment, which is also especially suitable for patients who are unconscious or cannot cooperate.

[0026] In a further scheme, as shown in Figure 3 and Figure 4 , the end cylinder 6 is horizontally placed, the inner cylinder 9 is coaxially and rotationally sealed in the end cylinder 6, the inner cylinder 9 is exposed from the end of the end cylinder 6, the upper and lower sides of the inner cylinder 9 are respectively provided with through holes 91 which are in communication with the air hole 61 and the face shield 7, and the first one-way valve 81 and the second one-way valve 82 are respectively located at the positions of the two through holes 91; rotating the inner cylinder 9 exchanges the positions of the first one-way valve 81 and the second one-way valve 82, so that the device is used for air inhalation assistance.

[0027] In this structure, a rotatable inner cylinder 9 is coaxially mounted inside the horizontally placed end cylinder 6. Both ends of the inner cylinder 9 protrude from the end cylinder 6 for easy manual operation. Rotating the inner cylinder 9180° interchanges the positions of the two through holes 91, thereby achieving a functional exchange of the one-way valve. In both modes, the piston movement direction remains unchanged, but the airflow direction is reversed due to the change in the position of the one-way valve. This structure realizes the multi-functional integrated design of this device, switching from foreign body suction mode to breathing assistance mode. The two modes cover the complete process of airway obstruction emergency treatment, namely, first clearing the foreign body, then maintaining ventilation, avoiding the time loss of changing equipment. This structure can complete the mode switching by rotating the inner cylinder 9, which only takes 1-2 seconds. It is suitable for emergency rescue scenarios where every second counts. The mode switching does not require tools or complicated steps, and even non-professionals can quickly master it.

[0028] In further proposals, such as Figure 5 As shown, a support rod 11 extends inward from the lower end of the vertical cylinder 1, and a guide rod 12 with a rectangular cross-section extends upward from the support rod 11. A sliding hole 31 with a rectangular cross-section is opened from the bottom side of the piston head 2 along the sliding column 3. The two inner sides of the sliding hole 31 slide and fit against the two outer sides of the guide rod 12 respectively.

[0029] By setting a guide rod, the movement direction of the piston head 2 can be further guided, limiting the rotation or lateral deviation of the piston head 2 during its up-and-down movement. The lateral force on the piston head 2 is distributed by the guide rod 12, avoiding direct friction between the piston head 2 and the inner wall of the vertical cylinder 1. With this structure, the piston head 2 always moves vertically along the axis of the vertical cylinder 1, avoiding deviation that could cause gaps between it and the cylinder wall, preventing air leakage that could affect the rescue effect. During rapid pulling operations, the guide structure maintains the stability of the piston movement, ensuring the accuracy of airflow control and improving the fault tolerance rate of emergency rescue. When non-professionals perform rescue, even if the direction of force applied by the push-pull handle 4 is slightly tilted, the guide rod 12 can still forcibly correct the piston path, reducing the risk of operational errors. The guide structure makes the piston movement smoother, allowing the operator to fully convert force into effective airflow pressure and avoid ineffective energy consumption. The stable piston stroke ensures that the airflow intensity is consistent with each suction or pressurization, improving the success rate of foreign object removal or breathing assistance.

[0030] In further proposals, such as Figure 5 , Figure 6 and Figure 7As shown, the top of the guide rod 12 is rotatably provided with a rotating block 13. The middle of the side of the guide rod 12 that is not in sliding contact with the sliding hole 31 is provided with a step 121 extending outward. The top of the piston head 2 is provided with several support springs 21 surrounding the sliding column 3. The top of several support springs 21 is connected to a slip ring 22. When the piston head 2 is pulled up to the limit distance, the bottom height of the piston head 2 exceeds the bottom height of the rotating block 13. The piston head 2 is rotated 180°, so that the guide rod 12 slides into the sliding hole 31 again. The step 121 is blocked on the bottom side of the piston head 2.

[0031] In this structure, pulling the piston head 2 to its limit allows for a 180° rotation. This rotation changes the obstruction at the bottom of the piston head 2. When the stop 121 blocks the piston head 2, its movement is restricted, reducing the pulling stroke and thus decreasing the air pressure extracted and the pressure used for assisted breathing. This adapts to different emergency recipients. Initially, the stop 121 is not in contact with the piston head 2, allowing it to move up and down freely with maximum pulling stroke, generating higher negative / positive pressure. After rotating 180°, the stop 121 blocks its bottom, limiting the downward distance and shortening the stroke, thus reducing airflow pressure. This setting can be selected based on the different emergency recipients, such as adults, children, and the elderly, allowing for different emergency settings to be chosen to avoid excessive or insufficient air pressure during emergency treatment, which could affect the effectiveness of the treatment. Furthermore, the flexible stop structure ensures that the piston head 2 can only be rotated by pulling it to its limit, preventing mode switching during emergency treatment.

[0032] In further proposals, such as Figure 1 As shown, an adjusting cylinder 14 is threadedly connected to the outer side of the bottom end of the vertical cylinder 1. The adjusting cylinder 14 is in contact with the ground. By rotating the adjusting cylinder 14, the height of the vertical cylinder 1 above the ground can be adjusted.

[0033] In this structure, the bottom outer side of the vertical cylinder 1 is provided with an external thread, and the inner side of the adjusting cylinder 14 is matched with an internal thread. The two are rotated to realize the raising and lowering of the vertical cylinder 1, so that the mask 7 can be adapted to the facial position of different patients. Lowering the height of the vertical cylinder 1 can make the mask 7 fit the smaller face of children, while raising it can fit adults. Through fine adjustment, the dynamic fit between the mask 7 and the patient's face can be achieved, ensuring airtightness.

[0034] In further proposals, such as Figure 2 As shown, the bottom outer side of the adjusting cylinder 14 is provided with a pressure plate 141 that is easy to press with one hand. The area is larger than the diameter of the adjusting cylinder 14, which is convenient for one-handed fixation of the rescue upright cylinder 1.

[0035] In further proposals, such as Figure 2As shown, the mask 7 is threadedly connected to the end cylinder 6, and the two ends of the air tube 5 are threadedly connected to the end cylinder 6 and the vertical cylinder 1, respectively. The mask 7 can be quickly disassembled for cleaning or replacement, avoiding the risk of cross-infection caused by foreign matter residue; when the air tube 5 is blocked or damaged, it only needs to be unscrewed and replaced, without discarding the entire device, thus reducing the cost of use.

[0036] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A device for preventing asphyxiation by removing foreign objects from the airway, characterized in that: The device includes a vertically placed cylinder with its opening facing downwards. A piston head is slidably sealed inside the cylinder, and a sliding column is connected to the top of the piston head. The sliding column extends from the top of the cylinder and is connected to a handle. An air tube extends from the side of the top of the cylinder, and an end tube is located at the end of the air tube. A face mask with its opening facing downwards is connected to the lower side of the end tube. An air hole is opened on the upper side of the end tube. The device also includes a first one-way air valve and a second one-way air valve. The first one-way air valve is located at the air hole, restricting airflow from the end tube to the outside. The second one-way air valve is located at the connection between the end tube and the face mask, restricting airflow from the face mask towards the end tube. The end tube is horizontally positioned, and an inner cylinder is coaxially rotatably sealed inside the end tube. The inner cylinder protrudes from the end of the end tube, and through holes communicating with the air hole and the face mask are respectively opened on the upper and lower sides of the inner cylinder. The first one-way air valve and the second one-way air valve are located at the two through holes respectively. By rotating the inner cylinder, the positions of the first and second one-way air valves are interchanged, allowing the device to be used for inhalation assistance.

2. The anti-asphyxiation device for removing foreign objects from the airway according to claim 1, characterized in that: The lower end of the vertical cylinder extends inward with a support rod, and the support rod extends upward with a guide rod with a rectangular cross-section. A sliding hole with a rectangular cross-section is opened from the bottom side of the piston head along the sliding column. The two inner sides of the sliding hole slide against the two outer sides of the guide rod respectively.

3. The anti-asphyxiation device for removing foreign objects from the airway according to claim 2, characterized in that: The top of the guide rod is rotatably equipped with a rotating block. The middle of the side of the guide rod that is not in sliding contact with the sliding hole is provided with a step. The top of the piston head is surrounded by a number of support springs. The top of the support springs is connected to a slip ring. When the piston head is pulled up to the limit distance, the bottom height of the piston head exceeds the bottom height of the rotating block. The piston head is rotated 180°, so that the guide rod slides into the sliding hole again. The step is placed on the bottom side of the piston head.

4. The anti-asphyxiation device for removing foreign objects blocking the airway according to claim 3, characterized in that: An adjusting cylinder is threaded to the outer side of the bottom end of the vertical cylinder. The adjusting cylinder is in contact with the ground. Rotating the adjusting cylinder adjusts the height of the vertical cylinder above the ground.

5. The anti-asphyxiation device for removing foreign objects blocking the airway according to claim 4, characterized in that: The bottom outer side of the regulating cylinder is provided with a pressure plate that facilitates single-handed pressing.

6. The anti-asphyxiation device for removing foreign objects blocking the airway according to claim 5, characterized in that: The mask is threaded to the end cylinder, and the two ends of the air tube are threaded to the end cylinder and the vertical cylinder, respectively.

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