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

Abstract

The utility model belongs to the technical field of medical supplies, and particularly relates to a negative pressure aspirator capable of automatically sucking out obstructed foreign matters in an airway, which comprises a main machine and a mask assembly, and the main machine comprises a piston cylinder assembly, a piston rod assembly and an upper fixing seat assembly. The upper fixing base assembly is used for controlling the piston rod assembly and comprises an upper fixing base, a main machine shell, a piston rod fixing piece, a key fixing piece and a key spring. When the main machine shell moves towards the mask assembly, the piston rod assembly is released to generate negative pressure. Under the emergency condition of sliding the host shell, time for finding a specific trigger key is not needed, and the user does not need to find the smooth posture of the user and adjust the pressing direction of fingers. The mask can be directly triggered as long as the mask is taken to be aligned with the mouth and the nose of a trial person and the main machine shell is taken to slide downwards forcibly no matter what gesture angle is, and compared with an emergency mask with a key, the emergency mask can save more service time and is more convenient and quicker under the emergency condition.

Description

Technical Field

[0001] The utility model relates to the field of medical supplies technology, specifically a negative pressure suction device that automatically removes foreign objects blocking the airway. Background Technology

[0002] Currently available anti-asphyxiation products on the market are all manual. While they can help clear an obstructed upper airway in certain situations, they also have drawbacks. They require a third party to manually suction the airway, which is difficult for the asphyxiated person to operate themselves or for patients requiring additional assistance, such as infants. The suction power depends on the force and speed with which the user pulls the product, making them unsafe, inconvenient, and inconsistent in effectiveness. Summary of the Invention

[0003] The main purpose of this utility model is to provide a negative pressure suction device that automatically removes foreign objects blocking the airway, which can solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the utility model proposes a negative pressure suction device for automatically removing foreign objects obstructing the airway, comprising a main unit and a mask assembly. The main unit includes a piston cylinder assembly, a piston rod assembly, and an upper fixed seat assembly. The upper fixed seat assembly is used to control the piston rod assembly, which includes an upper fixed seat, a main unit housing, a piston rod fixing component, a button fixing component, and a button spring. When the main unit housing moves towards the mask assembly, it releases the piston rod assembly, causing the main unit to generate negative pressure.

[0005] Preferably, the piston cylinder assembly includes a piston cylinder, a mask fixing component, an intake check valve, and an exhaust check valve.

[0006] Preferably, the piston rod assembly comprises a pressing sleeve, a piston rod, a piston spring, a deceleration damper, and a U-shaped sealing ring.

[0007] Preferably, the pressing sleeve is provided with a piston rod groove, and the piston rod fixing member is limited and fixed when it is inserted into the piston rod groove.

[0008] Preferably, when the main unit housing moves toward the mask assembly, the piston rod retainer pops out from the piston rod slot.

[0009] Preferably, when the pressing sleeve moves to a designated position in the direction of the mask assembly, the piston rod fixing member is engaged in the piston rod slot.

[0010] This utility model provides a negative pressure suction device for automatically removing foreign objects obstructing the airway. It has the following beneficial effects:

[0011] (1) This automatic negative pressure suction device for removing airway obstructions utilizes a sliding main unit casing. In emergencies, it eliminates the need to spend time finding a specific trigger button or adjusting the hand position for each user. Simply hold the device with the mask aligned with the user's mouth and nose, and regardless of hand position or angle, simply slide the main unit casing downwards to trigger the device. Compared to devices with buttons, this device is more time-efficient and convenient in emergencies. Extensive testing has demonstrated that this design reduces the time required for airway obstruction from 8 seconds to approximately 4 seconds, significantly increasing the user's chances of survival. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of a utility model mask assembly;

[0015] Figure 3 This is a schematic diagram of the main unit structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the piston cylinder assembly structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the piston rod assembly structure of this utility model;

[0018] Figure 6 This is a schematic diagram of the upper fixing seat assembly of this utility model;

[0019] Figure 7 This is an exploded view of the main unit of this utility model;

[0020] Figure 8 This is a partial cross-sectional view of the present invention.

[0021] Explanation of icon numbers:

[0022] 1. Main unit, 101. Piston cylinder assembly, 102. Piston rod assembly, 103. Upper fixing seat assembly, 10301. Upper fixing seat, 10302. Main unit housing, 10303. Piston rod fixing component, 10304. Button fixing component, 10305. Button spring, 2. Face mask assembly, 201. Face mask adapter, 202. Face mask, 203. Face mask guide tube, 3. Face mask fixing component, 4. Piston cylinder, 5. Intake check valve, 6. Exhaust check valve, 7. Piston rod, 8. Pressing sleeve, 9. Piston spring, 10. Deceleration buffer, 11. U-shaped sealing ring, 12. Button adapter.

[0023] The realization of the utility model's purpose, functional features, and advantages will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0025] Please see Figure 1-8 This automatic negative pressure suction device for removing obstructed airways consists of a main unit 1 and a mask assembly 2, which are interlocked to form a complete functional unit. When the main unit 1 is working, it generates negative pressure to suction out foreign objects.

[0026] The mask assembly 2 consists of a mask adapter 201, a mask 202, and a mask tubing 203. The mask 202 and the mask adapter 201 must be rigidly inserted as a single unit for use. The mask tubing 203 can be disassembled and replaced as needed. The mask adapter 201 is mainly used to connect the mask fixing component 3, securing the mask 202 and the mask tubing 203. The main function of the mask 202 is to isolate the nasal and oral regions of the asphyxiated person from the outside environment, creating a sealed area in the patient's mouth. Different sizes of mask 202 are provided for different age groups.

[0027] The main function of the mask tube 203 is to quickly transfer the negative pressure suction generated inside the piston cylinder 4 to the obstruction in the airway. The mask tube 203 is available in different sizes to match different sizes of masks 202.

[0028] The main unit 1 consists of a piston cylinder assembly 101, a piston rod assembly 102, and an upper fixed seat assembly 103. The piston cylinder assembly 101 consists of a piston cylinder 4, a mask fixing component 3, an intake one-way valve 5, and an exhaust one-way valve 6.

[0029] The main function of piston cylinder 4 is to fix the intake check valve 5, the exhaust check valve 6, and the mask fixing component 3, and to connect the fixing component assembly 103. The main function of mask fixing component 3 is to connect mask assembly 2. The intake check valve 5 prevents air from entering the mouth through the mask when the piston moves, and prevents strong air pulses from pushing food or objects further down, causing obstructions to enter the victim's airway deeper. The exhaust check valve 6 is located on both sides at the front end of piston cylinder 1. Its function is to quickly vent the air inside the piston cylinder cavity when piston rod 7 moves towards mask 202, creating a vacuum inside piston cylinder 4. Piston rod assembly 102 consists of pressing sleeve 8, piston rod 7, piston spring 9, deceleration buffer 10, and U-shaped sealing ring 11.

[0030] The main function of the pressing sleeve 8 is to connect to the piston rod 7, transmitting the pressing force to the piston rod 7. Simultaneously, the piston rod 7 compresses and stores the piston spring 9. The main function of the piston rod 7 is to install and fix the U-shaped sealing ring 11 and the deceleration damper 10. The main function of the piston spring 9 is to be the power source for the piston module, driving it to generate negative pressure suction. The main function of the deceleration damper 10 is to release the compressed spring when the button is triggered, thus reducing vibration and noise. The main function of the U-shaped sealing ring 11 is to work with the piston rod to create negative pressure inside the piston cylinder.

[0031] The upper fixing base assembly 103 consists of an upper fixing base 10301, a main unit housing 10302, a piston rod fixing component 10303, a button fixing component 10304, and a button spring 10305.

[0032] The main function of the upper fixing seat 10301 is to fix the control unit and screw it onto the piston cylinder to fix the power unit.

[0033] The main unit housing 10302 triggers the release piston module when it moves downwards. The main function of the button holder 10304 is to lock the piston rod 7. The main function of the piston rod holder 10303 is to press down on the button holder 10304, ensuring that the button holder 10304 can slide back and forth without popping out of the upper fixing seat 10301. The main function of the button spring 10305 is to push the button holder 10304 to transmit force and reset the button holder 10304.

[0034] Assembly steps

[0035] The intake check valve 2 and the exhaust check valve 3 are installed into the piston cylinder 4 in the indicated directions, and then the mask fixing piece 3 is installed and secured with screws.

[0036] (like Figure 5 The deceleration buffer 10 and two U-shaped sealing rings 11 are fitted onto the piston rod 7 and secured, and the piston spring 9 is placed into the piston rod 7.

[0037] (like Figure 6 The button spring 10305 is inserted into the button fixing part 10304 and then installed into the upper fixing base 10301.

[0038] Insert the assembled piston rod 7 described in (2) into the assembled piston cylinder 4 described in (1), then press the assembled upper fixing seat 10301 described in (3) to fix the piston rod 7 and piston cylinder 4 together with screws to form a whole. Insert it into the main unit housing 10302 and then insert the piston rod fixing part 10303 and tighten the screws. Then insert the pressing sleeve 8 and tighten the screws to complete the assembly of the main unit 1.

[0039] Pressing the sleeve 8 presses the piston module against the mask end of the piston cylinder 4. The piston module is locked by the button fixing part 10304. The compression spring 9 in the piston cylinder 4 is compressed by the pressing sleeve 8. The button fixing part 10304 triggered by the piston cylinder 4 is in the triggered state. The two exhaust one-way valves 6 on both sides of the front of the piston cylinder 4 open, and the intake one-way valve 5 in the middle of the mask 202 closes. The air inside the piston cylinder 4 will be discharged from the two exhaust one-way valves 6 on the side. At this time, the inside of the piston cylinder 4 is in a vacuum state. Since the intake one-way valve 5 in the middle of the mask 202 is closed, the air inside the piston cylinder 4 will not enter the victim's mouth, thus avoiding strong air pulses that push food or objects further down and cause the obstruction to enter the victim's airway more deeply. When the main unit casing 10302 is triggered, it will push the button fixing part 10304 to move forward, and the piston spring 9 will be released. At this time, the piston spring 9 will instantly lift the piston module away from the mask end of the piston cylinder. At this time, the two exhaust one-way valves 6 on both sides of the front of the piston cylinder will close, and the intake one-way valve 5 in the middle of the mask will open. A negative pressure will be generated instantly in the piston cylinder 4. The instantaneously generated negative pressure will be transmitted to the airway obstruction site of the asphyxiated person through the mask tube 203. Under the action of suction, the airway obstruction will be loosened or cleared from the airway position. When the main unit housing 10302 is subjected to downward force, it slides downward and collides with the button fixing member 10304 at an angle, achieving a 90-degree rotation and sliding. The button fixing member 10304 exits the piston rod slot, and the compressed piston spring 9 is released. For reuse, the pressing sleeve 8 needs to be pressed to press the piston module to the faceplate end to compress the piston spring 9. At the same time, the button spring 10305 pushes the button fixing member 10304 to lock into the piston rod slot. The piston rod slot is located on the inner wall of the main unit housing 10302 and has an inclined top. The top of the button fixing member 10304 is also designed with an inclined surface, resulting in the sliding phenomenon of the button fixing member 10304 colliding with the inclined surface of the main unit housing 10302.

[0040] In emergencies, this invention eliminates the need to spend time searching for a specific trigger button or finding a comfortable hand position and adjusting finger direction. Simply hold the device with the mask aligned with the user's mouth and nose, and regardless of hand position or angle, simply slide the device downwards from the casing to trigger it. Compared to devices with buttons, this invention is more time-efficient and convenient in emergencies. Extensive testing has proven that this design reduces the time required for activation from 8 seconds in existing technologies to approximately 4 seconds, significantly increasing the user's chances of survival.

[0041] The above description is only a preferred embodiment of the utility model and does not limit the patent scope of the utility model. All equivalent structural transformations made based on the inventive concept of the utility model and the contents of the utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the utility model.

Claims

1. A negative pressure suction device for automatically removing foreign objects obstructing the airway, comprising a main unit (1) and a mask assembly (2), characterized in that: The host (1) includes a piston cylinder assembly (101), a piston rod assembly (102), and an upper fixed seat assembly (103). The upper fixed seat assembly (103) is used to control the piston rod assembly (102) and includes an upper fixed seat (10301), a host housing (10302), a piston rod fixing member (10303), a button fixing member (10304), and a button spring (10305). When the host housing (10302) moves towards the mask assembly (2), it releases the piston rod assembly (102) to generate negative pressure in the host (1).

2. The negative pressure suction device for automatically removing foreign objects obstructing the airway according to claim 1, characterized in that: The piston cylinder assembly (101) includes a piston cylinder (4), a mask fastener (3), an intake check valve (5), and an exhaust check valve (6).

3. The negative pressure suction device for automatically removing foreign objects obstructing the airway according to claim 2, characterized in that: The piston rod assembly (102) consists of a pressing sleeve (8), a piston rod (7), a piston spring (9), a deceleration buffer (10), and a U-shaped sealing ring (11).

4. The negative pressure suction device for automatically removing foreign objects obstructing the airway according to claim 3, characterized in that: The pressing sleeve (8) is provided with a piston rod slot, and the button fixing component (10304) is inserted into the piston rod slot to limit and fix the piston rod (7).

5. A negative pressure suction device for automatically removing foreign objects obstructing the airway according to claim 4, characterized in that: When the main unit housing (10302) moves toward the face mask assembly (2), the button retainer (10304) pops out from the piston rod slot.

6. The negative pressure suction device for automatically removing foreign objects obstructing the airway according to claim 5, characterized in that: When the pressing sleeve (8) moves to the designated position in the direction of the mask assembly (2), the button fixing piece (10304) is inserted into the piston rod slot.

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