Negative pressure aspirator capable of automatically sucking out obstructed foreign matters in airway

Abstract

The utility model discloses a negative pressure aspirator capable of automatically sucking out obstructed foreign matters in an airway, and relates to the field of medical supplies. Comprising a main machine, a power unit, a control unit and a piston module are arranged in the main machine, the power unit and the piston module are matched to generate negative pressure so that foreign matter can be sucked out, the power unit comprises a piston rod and a piston spring, and the piston rod is installed in a piston cylinder in a sliding mode. The structure of the power unit and the structure of the piston module in the main engine are simplified, and the spring is arranged at the center, so that the volume in the sealing cavity can be increased under the same volume, and the using effect is improved. The control key of the control unit is arranged in the middle of the piston cylinder, so that the mask can be held more stably during use, and the situation of air leakage caused by instability of the contact part of the mask and the face is avoided.

Description

Technical Field

[0001] The utility model relates to the field of medical and health care products, in particular to a negative pressure aspirator for automatically sucking out foreign bodies blocking the airway. Background Art

[0002] When we have a choking situation with something stuck in our throat, in the absence of any auxiliary tools, everyone uses the Heimlich manoeuvre, which is a first aid method for sudden airway obstruction. Its principle is to forcefully impact the abdomen to create a strong airflow formed by the remaining air in the lungs. This directional and impactful airflow can remove the foreign body blocking the airway, thereby saving the person. For the Heimlich manoeuvre, the strength and operation methods are different for children of different ages. When a child needs to use the Heimlich manoeuvre, it must be a critical moment because if the operation method is incorrect, it will instead cause harm to the child. Although these operations have a high success rate, they may lead to complications. When using the Heimlich manoeuvre, if too much force is used, it will damage the ribs or internal organs, and the Heimlich manoeuvre may be difficult to conveniently implement for a weak person sitting in a wheelchair. If the standard Heimlich manoeuvre plan does not work, waiting for medical first responders will waste precious time. The average response time after calling the medical emergency number ranges from 7 to 14 minutes, making it less likely for first responders to intervene before brain damage occurs to the choking victim.

[0003] In the patent with the application number 202320475761.7, a portable first aid device for automatically sucking out foreign bodies blocking the airway was disclosed. However, the following problems still exist in the actual application of this solution: 1. The product structure is complex, the product volume is large, and it is not convenient to carry; 2. During use, since the control part is at the end, the centre of gravity is unstable during use, and there is likely to be air leakage at the contact part between the mask and the face, affecting the use effect. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a negative pressure aspirator for automatically sucking out foreign bodies blocking the airway, which reduces the product volume and simplifies the product structure under the same air flow rate, and can be more stable during use.

[0005] To achieve the above object, the present utility model is realized through the following technical solutions: A negative pressure aspirator for automatically sucking out foreign bodies blocking the airway includes a main body. Inside the main body, a power unit, a control unit, and a piston module are provided. The power unit and the piston module cooperate to generate negative pressure to suck out foreign bodies. The power unit includes a piston rod and a piston spring. The piston rod is slidably installed inside a piston cylinder. One end of the piston rod extends to the outside of the piston cylinder and is connected to a compression sleeve. The other end of the piston rod forms a sealed chamber with variable volume with the piston cylinder. An annular groove is opened at the other end of the piston rod. One end of the piston spring is placed inside the groove, and the other end of the piston spring is fixed to one end of the inner wall of the piston cylinder. The piston cylinder is provided with a suction check valve and an air outlet check valve. The suction check valve and the air outlet check valve control the air flow inside the sealed chamber.

[0006] Preferably, one end of the piston rod is provided with a protruding portion, and the protruding portion is located at the center of the annular groove.

[0007] Preferably, the control unit is arranged in the middle of the main body.

[0008] Preferably, the piston spring is located at the central position of the piston cylinder.

[0009] The present utility model provides a negative pressure aspirator for automatically sucking out foreign bodies blocking the airway. It has the following

[0010] Beneficial effects:

[0011] (1) For the negative pressure aspirator for automatically sucking out foreign bodies blocking the airway, the structure of the power unit and the piston module inside the main body is simplified, and the spring is arranged at the center. In this way, under the same volume, the volume of the sealed chamber can be increased, thereby enhancing the usage effect.

[0012] (2) For the negative pressure aspirator for automatically sucking out foreign bodies blocking the airway, by arranging the control buttons of the control unit in the middle of the piston cylinder, it can be held more stably during use, avoiding air leakage caused by instability at the contact part between the mask and the face. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the present utility model;

[0014] Figure 2 It is a schematic structural diagram of the main body of the present utility model;

[0015] Figure 3 It is a sectional view of the structure of the present utility model;

[0016] Figure 4 It is an exploded view of the present utility model.

[0017] In the figure: 1 main unit, 101 anti-asphyxiation main body, 102 piston module, 103 power unit, 104 control unit, 2 key lock, 3 mask assembly, 301 mask, 302 mask conduit, 303 mask adapter, 4 piston cylinder, 5 intake one-way valve, 6 exhaust one-way valve, 7 mask fixing piece, 8 piston spring, 9 piston rod, 10 pressing sleeve, 11 upper fixing seat, 12 key, 13 key fixing piece, 14 piston rod fixing piece, 15 key spring, 16 key lock, 17 U-shaped sealing ring, 18 deceleration buffer. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, but should not be construed as a limitation to the present invention.

[0020] Please refer to Figures 1-4 , the present invention provides a technical solution: a negative pressure aspirator for automatically sucking out foreign bodies blocking the airway, mainly composed of three parts: a main unit 1, a mask assembly 3 and a key lock 2.

[0021] The main unit 1 is mainly composed of an anti-asphyxiation main body 101, a power unit 103, a control unit 104 and a piston module 102.

[0022] The anti-asphyxiation main body 101 mainly includes a piston cylinder 4, an intake one-way valve 5, an exhaust one-way valve 6 and a mask fixing piece 7.

[0023] The piston cylinder 4 is mainly used by the power unit 103 to place the piston spring 8 and use the elastic force of the piston spring 8 as the power for the piston module 102; at the very front end of the piston cylinder 4, an intake one-way valve 5, two exhaust one-way valves 6 and a mask fixing piece 7 are fixedly installed.

[0024] The intake one-way valve 5 is located at the central position at the very front end of the piston cylinder 4, above the mask 301. Its function is to prevent air from entering the oral cavity through the mask when the piston moves, preventing a strong air pulse from pushing food or objects further downward and making the blockage deeper into the victim's airway.

[0025] The exhaust one-way valves 6 are located on both sides at the very front end of the piston cylinder 4. Their function is to quickly evacuate the air in the inner cavity of the piston cylinder 4 and create a vacuum in the inner area of the piston cylinder 4 when the piston rod 9 moves towards the mask direction.

[0026] The main function of the mask fixing member 7 is to fix the inhalation one-way valve 5 and the exhalation one-way valve 6 and to connect the mask adapter 303.

[0027] The power unit 103 mainly includes: a pressing sleeve 10, a piston rod 9, and a piston spring 8. The piston rod 9 is slidably installed inside the piston cylinder 4. One end of the piston rod 9 extends to the outside of the piston cylinder 4 and is connected to the compression sleeve 10. The other end of the piston rod 9 forms a variable-volume sealed chamber with the piston cylinder 4. An annular groove is provided at the other end of the piston rod 9. One end of the piston spring 8 is placed inside the groove, and the other end of the piston spring 8 is fixed to one end of the inner wall of the piston cylinder 4.

[0028] The main function of the pressing sleeve 10 is to connect the piston rod 9 and transfer the pressing force to the piston rod 9. At the same time, the piston rod 9 presses the piston spring 8 for compression and energy storage. The pressing sleeve 10 is installed at the top of the upper fixing seat 11 and connected to the piston rod 9. The piston rod 9 is above the piston spring 8. One end of the piston rod 9 is provided with a protrusion, and the protrusion is located at the center of the annular groove. The setting of the protrusion allows the piston spring 8 to wind around its surface, which can improve the stability of the spring. The piston spring 8 is located at the center of the piston cylinder 4.

[0029] The main function of the piston spring 8 is the power source of the piston module 102, driving the piston module 102 to generate negative pressure suction. The piston spring 8 is installed below the piston rod 9 in the inner cavity of the piston cylinder 4. When pressing the piston rod 9 downward, the air inside the piston cylinder 4 is discharged. After releasing, the piston spring 8 will bounce up, driving the piston rod 9 upward. At this time, a negative pressure will be generated in the inner cavity of the piston cylinder 4.

[0030] The main control unit 104 mainly includes: a button 12, a button fixing member 13, an upper fixing seat 11, a piston rod fixing member 14, a button spring 15, and a button lock 16.

[0031] The main function of the button 12 is to trigger and release the piston module 102. It is installed on the upper part of the outside of the upper fixing seat 11.

[0032] The main function of the button fixing member 13 is to press the piston rod fixing member 14 to ensure that the piston rod fixing member 14 can slide without popping out of the upper fixing seat 11.

[0033] The main function of the upper fixing seat 11 is to fix the control unit 104 and screw-fix the power unit 103 with the piston cylinder 4. The upper fixing seat 11 is located in the middle of the piston cylinder 4

[0034] The main function of the piston rod fixing member 14 is to lock the piston rod 9.

[0035] The main function of the button spring 15 is to push the piston rod fixing member 14 to transfer force and reset the button 12.

[0036] The main function of the key lock 16 is to prevent accidental key operations. Only by removing the key lock 16 can the key 12 be pressed.

[0037] The piston module 102 mainly consists of a piston rod 9, two U-shaped sealing rings 17, and a deceleration buffer 18.

[0038] The piston module 102 reciprocates in the inner cavity of the piston cylinder 4. By pressing the sleeve 10, the piston module 102 can be pushed to the mask end of the inner cavity of the piston cylinder 4. At this time, the inside of the inner cavity of the piston cylinder 4 is in a vacuum state, the piston spring 8 is compressed, and the piston rod fixing member 14 locks the piston rod 9. When the key 12 is triggered, the piston rod fixing member 14 unlocks the piston rod 9, the piston spring 8 is released, and the piston module 102 will quickly move away from the mask end of the inner cavity of the piston cylinder 4 instantly to generate negative pressure. A suction force required to remove (suction out) food or objects in the airway of the suffocating person is quickly generated above the airway of the suffocating person.

[0039] The main function of the piston rod 9 is to install and fix the U-shaped sealing rings 17 and the deceleration buffer 18.

[0040] The main function of the U-shaped sealing ring 17 is to cooperate with the piston rod 9 to form negative pressure inside the piston cylinder 4. The U-shaped sealing ring 17 is installed on the lower end of the piston rod 9 in a positive and negative manner.

[0041] The main function of the deceleration buffer 18 is to dampen vibration and reduce noise when the piston spring 8 is released when the key 12 is triggered.

[0042] The mask assembly 3 mainly consists of a mask adapter 303, a mask 301, and a mask conduit 302.

[0043] The mask adapter 303 is mainly used to connect the mask fixing member 7 to fix the mask 301 and the mask conduit 302.

[0044] The main function of the mask 301 is to isolate the inner regions of the nose and mouth of the suffocating person from the outside world, creating an airtight area in the patient's oral cavity. Different-sized masks are provided for different age groups.

[0045] The main function of the mask conduit 302 is to quickly transfer the negative pressure suction generated in the inner cavity of the piston cylinder 4 to the blocked area at the airway opening. The mask conduit 302 comes in different sizes, corresponding to and matching different-sized masks 301.

[0046] Working principle: Press the sleeve 10 to press the piston module 102 to the mask end inside the cavity of the piston cylinder 4. The piston module 102 is locked by the piston rod fixing member 14. The piston spring 8 in the piston cylinder 4 is compressed by the pressing sleeve 10. The button 12 is in the triggered state. The two air outlet check valves 6 on both sides in front of the piston cylinder 4 are opened, and the intake check valve 5 in the middle of the mask 301 is closed. The air inside the cavity of the piston cylinder 4 will be discharged from the two air outlet check valves 6 on the side. At this time, the inside of the piston cylinder 4 is in a vacuum state. Since the intake check valve 5 in the middle of the mask 301 is closed, the air inside the cavity of the piston cylinder 4 will not enter the victim's oral cavity, avoiding the strong air pulse from pushing the food or object further downward and making the blockage deeper into the victim's airway. When the button 12 is triggered, the button fixing member 13 will push the piston rod fixing member 14 to move forward, and the piston spring 8 is released. At this time, the piston spring 8 will instantly bounce up the pressing sleeve 10, and the pressing sleeve 10 will also drive the piston module 102 to instantly move away from the mask end of the piston cylinder 4. At this time, the two air outlet check valves 6 on both sides in front of the piston cylinder 4 are closed, and the intake check valve 6 in the middle of the mask 301 is opened. A negative pressure is instantly generated inside the piston cylinder 4, and the instantly generated negative pressure is transmitted to the blocked part of the airway opening of the suffocator through the mask conduit 302. The airway obstruction is loosened or removed from the airway position under the action of the suction force.

[0047] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A negative pressure aspirator for automatically sucking out foreign bodies blocking the airway, comprising a main unit (1). A power unit (103), a control unit (104) and a piston module (102) are arranged inside the main unit (1). The power unit (103) and the piston module (102) cooperate to generate negative pressure to suck out foreign bodies. It is characterized in that: The power unit (103) includes a piston rod (9) and a piston spring (8). The piston rod (9) is slidably installed inside the piston cylinder (4). One end of the piston rod (9) extends to the outside of the piston cylinder (4) and is connected to a compression sleeve (10). The other end of the piston rod (9) forms a sealing chamber with variable volume with the piston cylinder (4). An annular groove is formed at the other end of the piston rod (9). One end of the piston spring (8) is placed inside the groove, and the other end of the piston spring (8) is fixed to one end of the inner wall of the piston cylinder (4). An intake check valve (5) and an exhaust check valve (6) are provided on the piston cylinder (4), and the intake check valve (5) and the exhaust check valve (6) control the air flow in the sealing chamber.

2. The negative pressure aspirator for automatically sucking out foreign bodies blocking the airway according to claim 1, wherein: One end of the piston rod (9) is provided with a protruding portion, and the protruding portion is located at the center of the annular groove.

3. The negative pressure aspirator for automatically sucking out foreign bodies blocking the airway according to claim 1, wherein: The control unit (104) is arranged in the middle of the main machine (1).

4. The negative pressure aspirator for automatically sucking out foreign bodies obstructing the airway according to claim 1, wherein: The piston spring (8) is located at the central position of the piston cylinder (4).

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