A manual negative pressure aspirator

Abstract

This invention provides a manual negative pressure suction device, comprising a suction device body, which is a cylindrical structure open at one end. The open end of the cylindrical structure has an internally threaded section with a screw cap. A piston rod is housed inside the screw cap, and a piston stopper is located at one end of the piston rod within the cylindrical structure. A central hole is located at the closed end of the cylindrical structure, connecting to a suction connector via a one-way duckbill valve. Symmetrically arranged first through holes are located on both sides of the central hole, arranged along the diameter of the end face of the cylindrical structure. Each of the first through holes has an openable and closable exhaust valve. The suction connector is a three-way valve, with the other two ports being a suction tube interface and a drainage port, respectively. The drainage port connects to a drainage bottle. This invention utilizes manual pulling of the piston rod to move the piston stopper. Through the change in the internal volume of the suction device body, vomit and secretions from the patient's airway can be quickly suctioned out.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a manual negative pressure suction device. Background Technology

[0002] Suctioning devices are essential tools for preventing airway obstruction and rescuing patients from suffocation. They are commonly used to resuscitate critically ill, comatose, elderly, patients still recovering from general anesthesia, post-major surgery patients, and patients with chest trauma whose airways are obstructed by vomit or secretions, resulting in various respiratory difficulties or an inability to cough effectively for various reasons. Suction devices utilize negative pressure to remove secretions, exudates, and irrigation fluids from the patient's airway, and have a wide range of applications. Currently, hospitals commonly equip themselves with electric suction devices and centrally controlled suction devices, which are often used as backup emergency equipment. Manual suction devices currently have the following technical limitations: they cannot quickly remove vomit or secretions from the patient's airway; and they cannot be disassembled, cleaned, disinfected, and reused.

[0003] Therefore, how to design a manual negative pressure suction device has become an urgent problem to be solved. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model provides a manual negative pressure suction device to solve at least one of the above-mentioned technical problems.

[0005] The technical solution of this utility model is: a manual negative pressure suction device, including a suction device body, wherein the suction device body is a cylindrical structure with one open end, the open end of the cylindrical structure is provided with an internal thread section, the internal thread section is provided with a screw cap, a piston rod is provided inside the screw cap, and a piston rubber plug is provided at one end of the piston rod located inside the cylindrical structure; a central hole is provided on the closed end of the cylindrical structure, the central hole is connected to the suction connector through a one-way duckbill valve, and first through holes are symmetrically arranged on both sides of the central hole, the central hole and the two first through holes are arranged along the end face diameter of the cylindrical structure, and an exhaust valve that can be opened and closed is provided on each of the first through holes; the suction connector is a three-way valve, the other two ports of the three-way valve are a suction tube interface and a sewage outlet, the sewage outlet is connected to a drainage bottle, and the suction tube interface is connected to a suction tube.

[0006] This utility model uses a suction device body, which is a cylindrical structure with one open end. A screw cap is installed at the open end of the cylindrical structure, and a piston stopper is installed inside the cylindrical structure. The piston rod passes through the screw cap and connects to the piston stopper. An exhaust valve and a one-way duckbill valve are respectively installed at the closed end of the cylindrical structure. The one-way duckbill valve is connected to the suction tube interface and the drainage port through the suction connector. The suction tube interface is connected to the suction tube, and the drainage port is connected to the drainage bottle. By manually pulling the piston rod, the piston stopper moves. Through the change of the internal volume of the suction device body, vomit and secretions in the patient's airway can be quickly suctioned out. The vomit and secretions are drawn into the drainage bottle connected to the drainage port, or the gas inside the suction device body is discharged. Each part can be disassembled for cleaning and disinfection, which solves the technical defects of not being able to be disassembled and reused after cleaning and disinfection. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the internal structure of this utility model.

[0008] Figure 2 This is a schematic diagram of the internal structure of the present invention when the piston is pulled backward to suction sputum.

[0009] Figure 3 This is a schematic diagram of the internal structure of the present invention when the piston is pushed forward to expel gas.

[0010] In the diagram: 1. Suction device body; 2. Piston rod; 3. Piston plug; 4. First buckle; 5. First air outlet; 6. First valve; 7. Exhaust valve; 8. Suction tube interface; 9. Suction connector; 10. Drainage port; 11. Drainage bottle; 12. Second valve; 13. Second air outlet; 14. Second buckle; 15. One-way duckbill valve; 16. Screw cap. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] See Figure 1-3 The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore lack substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0013] Example 1: A manual negative pressure suction device, referenced Figure 1 The device includes a suction body 1, which is a cylindrical structure with one open end. The open end of the cylindrical structure has an internal thread section, and a screw cap 16 is provided on the internal thread section. A piston rod 2 is provided inside the screw cap 16, and a piston rubber plug 3 is provided at one end of the piston rod 2 located inside the cylindrical structure. A central hole is provided on the closed end of the cylindrical structure. The central hole is connected to the suction connector 9 through a one-way duckbill valve 15. Symmetrically arranged first through holes are provided on both sides of the central hole. The central hole and the two first through holes are arranged along the diameter of the end face of the cylindrical structure. An openable and closable exhaust valve 7 is provided on each of the first through holes. The suction connector 9 is a three-way valve. The other two ports of the three-way valve are a suction tube interface 8 and a sewage outlet 10, respectively. The sewage outlet 10 is connected to the drainage bottle 11, and the suction tube interface 8 is connected to the suction tube. This invention employs a suction device body, which is a cylindrical structure open at one end. A screw cap is installed at the open end of the cylindrical structure, and a piston stopper is installed inside. A piston rod passes through the screw cap and connects to the piston stopper. An exhaust valve and a one-way duckbill valve are respectively installed at the closed end of the cylindrical structure. The one-way duckbill valve is connected to a suction tube interface and a drainage port via a suction connector. The suction tube interface connects to the suction tube, and the drainage port connects to a drainage bottle. By manually pulling the piston rod, the piston stopper moves, and through the change in the internal volume of the suction device body, vomit and secretions in the patient's airway can be quickly suctioned out. The vomit and secretions are drawn into the drainage bottle connected to the drainage port, or the gas inside the suction device body is expelled. Each part can be disassembled for cleaning and disinfection, solving the technical defects of not being able to disassemble and reuse after cleaning and disinfection. It does not rely on a power source and is easy to carry, ensuring immediate use in any situation, and has a positive effect on the rescue and treatment of asphyxiated patients.

[0014] Example 2: Based on Example 1, the three-way valve is a first T-shaped structure, with the suction tube interface 8 and the one-way duckbill valve 15 located at both ends of the flange of the first T-shaped structure. This utility model adopts a three-way valve with a first T-shaped structure, where the suction tube interface and the one-way duckbill valve are located at both ends of the flange of the first T-shaped structure.

[0015] Example 3: Based on Example 1, a valve is provided at the outlet of any of the exhaust valves 7. This invention utilizes a valve at the outlet of the exhaust valve, which allows for exhaust when opened.

[0016] Example 4: Based on Example 3, a first air outlet 5 is symmetrically arranged on both sides of one of the first through holes, and a second air outlet 13 is symmetrically arranged on both sides of the other first through hole. The first through holes, the first air outlets 5, and the second air outlets 13 are all arranged along the end face diameter of the cylindrical structure. This utility model uses symmetrically arranged air outlets on both sides of the exhaust valve, allowing exhaust to be released through the air outlets when the valve is opened.

[0017] Example 5: Based on Example 4, the two valves correspond to the first valve 6 and the second valve 12, respectively. The two first air outlets 5 are covered by the first valve 6, and the two second air outlets 13 are covered by the second valve 12. This utility model uses a first valve and a second valve. When the first valve is opened, exhaust can be released through the two first air outlets, and when the second valve is opened, exhaust can be released through the two second air outlets.

[0018] Example 6: Based on Example 4, a first buckle 4 is provided on the exhaust valve 7 between the two first air outlets 5, and a second buckle 14 is provided on the exhaust valve 7 between the two second air outlets 13. This utility model uses buckles on the exhaust valves; the buckle connection eliminates the need for complex tools and excessive operating steps during installation, greatly saving installation time and labor costs, and improving work efficiency.

[0019] Example 7: Based on Example 1, the piston rod 2 is a second T-shaped structure. The web of the second T-shaped structure passes through the central hole of the screw cap 16 and connects to the piston plug 3. This invention uses a piston rod with a second T-shaped structure. The web of the second T-shaped structure passes through the central hole of the screw cap and connects to the piston plug. Pulling the flange of the second T-shaped structure can drive the piston plug to move.

[0020] Example 8: Based on Example 7, the piston stopper 3 is a cylinder. A rubber sealing ring is provided on the outer cylindrical surface of the cylinder. The outer ring of the rubber sealing ring is tightly fitted with the inner wall of the cylindrical structure, forming a structure that can both slide and seal. This utility model uses a cylindrical piston stopper with a rubber sealing ring on the outer cylindrical surface. The outer ring of the rubber sealing ring is tightly fitted with the inner wall of the cylindrical structure, forming a structure that allows the piston stopper to slide along the inner wall of the suction device body while also creating a seal between the piston stopper and the inner wall of the suction device body.

[0021] In specific implementation, 1) when the piston is pulled backward to suction sputum according to this utility model, refer to... Figure 2 By manually pulling the piston rod 2 backward, suction is generated. The two valves retract backward, creating a negative pressure state between the piston stopper 3 and the left side of the suction device body 1, causing the one-way duckbill valve 15 to open. To balance the pressure, gas is drawn into the drainage bottle 11. At this time, the pressure difference generated by the other end of the suction tube connected to the suction tube interface 8 being inserted into the sputum causes the sputum to be drawn into the drainage bottle 11 connected to the drain port 10. The suction generates suction. The suction causes the pressure difference generated when the suction device is inserted into the sputum and vomit to draw the liquid into the drainage bottle 11. By controlling the movement of the piston rod 2, the purpose of suction can be achieved.

[0022] 2) When this utility model pushes the piston forward to exhaust gas, refer to... Figure 3The piston rod 2 is pushed forward to generate pressure, the one-way duckbill valve 15 is closed, the valve is pushed forward by the pressure and opens, the air outlet is opened, and the gas flows out.

[0023] 3) Repeated operation can continuously generate suction and pressure, achieving the goal of clearing sputum through manual suction. The operation is simple and quick. It can quickly clear vomit and secretions from the patient's airway even without power, and can be repeatedly cleaned and reused, making it economical and affordable.

[0024] The above-described embodiments are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A manual negative pressure aspirator, comprising an aspirator body (1), characterized in that: The main body (1) of the suction device is a cylindrical structure with one open end. The open end of the cylindrical structure is provided with an internal thread section, and a screw cap (16) is provided on the internal thread section. A piston rod (2) is provided inside the screw cap (16), and a piston rubber plug (3) is provided at one end of the piston rod (2) located inside the cylindrical structure. A central hole is provided on the closed end of the cylindrical structure. The central hole is connected to the suction connector (9) through a one-way duckbill valve (15). Symmetrically arranged first through holes are provided on both sides of the central hole. The central hole and the two first through holes are arranged along the diameter of the end face of the cylindrical structure. An air vent valve (7) that can be opened and closed is provided on the first through hole respectively. The suction connector (9) is a three-way valve. The other two ports of the three-way valve are the suction tube interface (8) and the sewage outlet (10). The sewage outlet (10) is connected to the drainage bottle (11), and the suction tube interface (8) is connected to the suction tube.

2. The manual negative pressure suction device according to claim 1, characterized in that: The three-way valve is a first T-shaped structure, with the suction tube interface (8) and the one-way duckbill valve (15) located at both ends of the flange of the first T-shaped structure.

3. A manual negative pressure suction device according to claim 1, characterized in that: Each of the exhaust valves (7) is provided with a valve at its outlet.

4. A manual negative pressure suction device according to claim 3, characterized in that: A first air outlet (5) is symmetrically arranged on both sides of one first through hole, and a second air outlet (13) is symmetrically arranged on both sides of another first through hole. The first through hole, the first air outlet (5), and the second air outlet (13) are all arranged along the end face diameter of the cylindrical structure.

5. A manual negative pressure suction device according to claim 4, characterized in that: The two valves correspond to the first valve (6) and the second valve (12) respectively. The two first air outlets (5) are covered by the first valve (6), and the two second air outlets (13) are covered by the second valve (12).

6. A manual negative pressure suction device according to claim 4, characterized in that: A first latch (4) is provided on the exhaust valve (7) between the two first air outlets (5), and a second latch (14) is provided on the exhaust valve (7) between the two second air outlets (13).

7. A manual negative pressure suction device according to claim 1, characterized in that: The piston rod (2) is a second T-shaped structure, and the web of the second T-shaped structure passes through the central hole of the screw cap (16) and is connected to the piston plug (3).

8. A manual negative pressure suction device according to claim 7, characterized in that: The piston plug (3) is a cylinder, and a rubber sealing ring is provided on the outer cylindrical surface of the cylinder. The outer ring of the rubber sealing ring is tightly fitted with the inner wall of the cylinder structure to form a structure that can both slide and seal.

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