Pneumothorax needle using check valve and one-way valve structure

Abstract

A pneumothorax needle using a check valve and one-way valve structure, comprising: a valve body assembly (100), which is of a tubular structure and allows for insertion of another component and circulation of air; a catheter assembly (200), communicated with and connected to one end of the valve body assembly (100) and used for communicating the thoracic cavity with the outside; a puncture needle assembly, detachably fixed onto the valve body assembly (100) and extending outward through the valve body assembly (100) and the catheter assembly; a one-way valve assembly (500), communicated with and connected onto the side wall of the valve body assembly (100), and used for discharging air out of the valve body assembly (100) and making a sound during air discharging to prompt an air discharging condition; and a valve body switch (600), rotatably arranged on the side wall of the valve body assembly (100) and controlling opening and closing of a channel in the valve body assembly (100). The pneumothorax needle in the present invention has few structural components and thus has better stability; the one-way valve assembly and the valve body switch are combined by extremely few structures, thereby improving the overall stability to the maximum extent. Moreover, a sound is made during air discharging, making it convenient to know the air discharging condition, thereby achieving high practicability.

Description

A pneumothorax needle using a check valve and a one-way valve structure Technical Field

[0001] The present invention relates to the technical field of pneumothorax needles, in particular to a pneumothorax needle using a stop valve and a one-way valve structure. Background Art

[0002] The pleural cavity is a closed, potentially airless space. Because the chest cavity is under negative pressure, once this airtightness is compromised, gas can enter and accumulate within the cavity, causing lung compression, a condition known as pneumothorax. Patients with large numbers of pneumothoraces experience significant respiratory or circulatory dysfunction, chest pain and tightness, and severe dyspnea. They can also experience symptoms such as increased heart rate, decreased blood pressure, and even shock due to the loss of negative pressure from venous return. Clinically, pneumothorax often results from primary lung disease, leading to rupture of lung tissue and the visceral pleura, or from iatrogenic factors such as surgery, lung biopsy, central venous catheter placement, and procedures requiring access to the chest cavity. In daily life, pneumothorax is primarily caused by sharp injuries, blunt trauma, and traffic accidents. On the battlefield, it is primarily caused by penetrating chest and back injuries (gunshot wounds), contusions (car accidents), and powerful explosions.

[0003] The incidence of pneumothorax in patients with chest trauma is as high as 97.6%. Traumatic pneumothorax usually develops rapidly and changes rapidly, requiring emergency treatment. Effective treatment can save the lives of more than 90% of the injured. Improper treatment or untimely treatment will lead to respiratory and circulatory disorders in patients, and in severe cases, it will endanger the patient's life safety. Therefore, first aid is required at the on-site treatment stage outside the hospital.

[0004] The current method of treating pneumothorax is for doctors to perform it in the operating room: cut the patient's skin, insert the drainage tube into the chest cavity through the second intercostal space at the midclavicular line, connect the external section of the drainage tube to the drainage bag, or perform continuous closed chest drainage.

[0005] There are also methods of using drainage devices for emergency treatment. For example, Chinese patent CN217119009U discloses a combined closed chest drainage device, which includes a drainage bottle 1, a drainage tube assembly, and a puncture assembly 5 that passes through the drainage tube assembly and is removable. Its specific working method is as follows: after the puncture is successful and the puncture needle 52 is withdrawn, the flux switch 4 is opened. At this time, when the patient exhales, the positive pressure in the chest cavity causes the gas to pass through the one-way valve and be discharged from the body through the flux switch 4. During inspiration, the negative pressure in the chest cavity closes, preventing gas backflow. If fluid flows out of the chest cavity, the flux switch 4 is opened after the drainage bottle 1 is connected to the end of the catheter 2 to drain the fluid. The catheter 2 is provided with a threaded interface away from the needle tip of the puncture needle 52. The drainage bottle 1 is provided with an internal thread at the bottle mouth. The drainage bottle 1 is connected to the threaded interface and fixed to the skin with adhesive 11 on its back. An indicator window 7 is provided on the catheter 2. When air flows toward the indicator window 7 and no gas flows through the indicator, the flux switch 4 can be turned off to observe whether the pneumothorax disappears completely and to confirm the removal of the tube.

[0006] The existing technology has a relatively complex structure, and its reliability is greatly reduced due to too many components. It is also expensive and difficult to assemble. At the same time, the drainage tube, which is easily contaminated, is an integral type, which is not conducive to disinfection and reuse. The internal components are difficult to disinfect and the application cost is high. In order to better detect the exhaust situation, we propose a pneumothorax needle using a stop valve and a one-way valve structure. Technical issues

[0007] The traditional structure cannot accurately and timely judge the gas discharge situation in the chest cavity. In the existing technology, the volume of gas discharged from the chest cavity is too small, and it is not practical to simply check it through the indicator window. Moreover, the indicator window is located at the upper end of the one-way valve. The patient's exhaust is carried out through the one-way valve. When the flux switch is closed, the air flow change cannot be observed in the indicator window, and it is also impossible to judge whether exhaust is in progress. In the existing technology, the judgment of exhaust is made by medical staff based on the patient's breathing situation. At the beginning of exhaust, the patient's breathing is rapid, and after exhaust, the patient's breathing is relatively smooth. However, this method requires medical staff to be close to the patient's chest, and it takes a long time and the accuracy is also low. Technical Solutions

[0008] A pneumothorax needle using a stop valve and a one-way valve structure, comprising:

[0009] The valve body assembly is a tubular structure used for inserting other components and circulating gas;

[0010] A catheter assembly is connected to one end of the valve body assembly and is used to connect the chest cavity with the outside world;

[0011] a puncture needle assembly, which is detachably fixed to the valve body assembly and extends outward through the valve body assembly and the catheter assembly;

[0012] A one-way valve assembly is connected to the side wall of the valve body assembly and is used to discharge the air in the valve body assembly, and emits a sound to indicate the exhaust status during the exhaust process;

[0013] The valve body switch is rotatably arranged on the side wall of the valve body assembly and controls the opening and closing of the channel in the valve body assembly.

[0014] It is further characterized by:

[0015] The valve body assembly is provided with a catheter connector, a one-way valve docking hole, a valve body switch mounting hole and a female connector in sequence from bottom to top, wherein the catheter connector is used to be connected with the catheter assembly, the one-way valve docking hole is used to dock the one-way valve assembly, the valve body switch mounting hole is a through hole, and a valve body switch is rotatably connected to the valve body switch mounting hole, and the closure of the inner cavity of the valve body assembly is controlled by the rotation of the valve body switch; the female connector and the puncture needle assembly are docked by means of a knob.

[0016] The valve body switch extends into the valve body assembly on a section thereof and is provided with a through docking hole. When the docking hole coincides with the inner cavity of the valve body assembly, the puncture needle is used to penetrate the hole. When the docking hole does not coincide with the valve body assembly, the passage is closed.

[0017] The puncture needle assembly includes a puncture needle and a handheld part. The puncture needle is provided with a sharp part for piercing the chest cavity. The puncture needle is connected to the end of the handheld part away from the sharp part. The puncture needle is provided with a male connector that docks with the female connector knob.

[0018] The catheter assembly includes a catheter body, and a plug-in part is provided at the movable end of the catheter body. The plug-in part adopts a tapered design, which can better fit the puncture needle into the chest cavity. The catheter body and the plug-in part are made of different materials, and the hardness of the plug-in part material is lower than that of the catheter body material.

[0019] The surface of the catheter body is ring-printed with scale lines, which facilitates accurate reading of the insertion depth of the puncture needle system during use.

[0020] The front half of the catheter body is provided with a plurality of exhaust holes, and the plurality of exhaust holes are not located on the same straight line, thereby improving the exhaust effect and limiting the entry of pleural effusion into the catheter body.

[0021] The one-way valve assembly includes a valve core and a valve sleeve, the valve sleeve covers the valve core and fixes the valve core to the valve body assembly, the valve core includes a connecting seat and a valve body, wherein the valve body is made of silicone and adopts a duckbill design, and a linear exhaust port is opened at the end of the valve body, and a connecting column is also connected to the cross-section of the valve body near the connecting seat to improve the contact effect between the valve core and the valve sleeve.

[0022] The valve sleeve includes a clamping seat and a sleeve connected to the clamping seat. The clamping seat is clamped on the side wall of the valve body assembly. The sleeve is sleeved on the valve core, and a circular air guide hole corresponding to the exhaust port position is opened on the sleeve.

[0023] It also includes a syringe and a needle cap, which form a sealed accommodating chamber for accommodating the pneumothorax needle after being connected. Beneficial effects

[0024] The pneumothorax needle in the present invention has fewer structural components and better stability. Its one-way valve assembly and valve body switch both adopt a very small structural combination, which maximizes the overall stability. In addition, it makes a sound when exhausting, making it convenient to understand the exhaust situation, and has strong practicality.

[0025] At the same time, the present invention also has the following advantages:

[0026] (1) When the gas in the chest cavity is exhausted outward through the valve core, a sound is made due to the shape design of the valve body and the linear opening of the exhaust port. The sound can be used to determine whether the pneumothorax needle is exhausting gas, and the degree of exhaust can also be determined by the size of the sound. After the medical staff inserts the pneumothorax needle into the patient's chest cavity, as the puncture needle is gradually inserted, the gas is discharged by the contraction and relaxation of the lungs to change the chest cavity pressure.

[0027] (2) In the present invention, both the structure of the one-way valve assembly and the structure of the valve body switch are extremely simple, using a small number of parts to achieve the original function. On the one hand, the overall stability is improved, because the failure rate is also higher due to too many parts. In addition, the assembly is quick, and the various parts are installed separately, which can also be easily disinfected, cleaned, and reused. On the other hand, the cost is greatly reduced, making the price of this patented product lower than that of its peers.

[0028] (3) Multiple exhaust holes are not on the same straight line. Therefore, even if the catheter body deviates from the insertion position and contacts the inner wall of the chest cavity or internal tissue, it will not affect the exhaust of holes in other directions. Moreover, due to the provision of multiple holes, if the catheter body is inserted into the pleural fluid, the presence of these exhaust holes will not drain the liquid, thereby only achieving the exhaust effect. Even if the catheter body is fully inserted into the pleural fluid, the pleural fluid will not be discharged due to the lack of a negative pressure suction device. The pressure generated by the patient's breathing alone is very small and insufficient to discharge the liquid. At this time, the sound generated by the subsequent valve core exhaust can also be used to judge the insertion temperature, and the medical staff can then adjust the insertion depth to perform only exhaust work, thereby improving the exhaust efficiency and effectively alleviating the pneumothorax condition.

[0029] (4) The catheter assembly includes a catheter body. The movable end of the catheter body is provided with a plug-in portion. The plug-in portion adopts a tapered design so that it can better fit the puncture needle when inserted into the chest cavity. The catheter body and the plug-in portion are made of different materials. The catheter body is made of the material of the connecting seat valve body assembly, and the plug-in portion is made of the material of the connecting seat female connector catheter connector valve body assembly valve body switch. The hardness of the plug-in portion material is lower than that of the catheter body material, ensuring that after entering the human body, the outer sleeve will not cause secondary damage to the human body such as scratches and punctures. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic structural diagram of the present invention.

[0031] FIG2 is a side view of FIG1 .

[0032] FIG3 is a schematic structural diagram of the catheter assembly of the present invention.

[0033] FIG4 is a schematic structural diagram of the puncture needle assembly of the present invention.

[0034] FIG5 is a schematic diagram of the cross-sectional structure of the valve body assembly, the one-way valve assembly and the valve body switch connection in the present invention.

[0035] FIG6 is a schematic diagram of the explosion structure of FIG5 .

[0036] FIG7 is a schematic structural diagram of the valve core in the present invention.

[0037] FIG8 is a schematic structural diagram of the valve sleeve in the present invention.

[0038] FIG9 is a schematic diagram of the connection structure of the syringe, needle cap, and pneumothorax needle in the present invention. Modes for Carrying Out the Invention

[0039] 1-9 , the technical solution of the present invention provides a pneumothorax needle using a check valve and a one-way valve structure, comprising a valve body assembly 100, a catheter assembly 200 connected to the valve body assembly 100, and a detachable puncture needle 300 that passes through the valve body assembly 100 and the catheter assembly 200. The puncture needle 300 passes through the valve body assembly 100 and the catheter assembly 200 and extends outward. In specific implementation, after the puncture needle 300 punctures the chest cavity, the front end of the catheter assembly 200 is brought into the chest cavity, and then the puncture needle 300 is pulled out, at which point the front end of the catheter assembly 200 is placed in the chest cavity. At this point, the insertion of the catheter assembly 200 is completed, and the subsequent exhaust work is then completed through the valve body assembly 100.

[0040] In this embodiment, the valve body assembly 100 is connected to the catheter assembly 200. At the same time, the catheter assembly 200 is connected to a one-way valve assembly 500 for exhausting only to the outside and a valve body switch 600 for controlling the opening and closing of the puncture needle 300 channel;

[0041] In this embodiment, as shown in FIG4 , the puncture needle 300 and the handheld part 400 constitute a puncture needle assembly. The distal end of the puncture needle 300 is connected to the handheld part 400 , and the handheld part 400 is provided with a male connector 401 for convenient docking with the valve body assembly 100 ;

[0042] Specifically, as shown in Figures 5 and 6, the valve body assembly 100 is a tubular structure, and the valve body assembly 100 is provided with a conduit connector 101, a one-way valve docking hole 102, a valve body switch mounting hole 103 and a female connector 104 in order from bottom to top. The conduit connector 101 is used to be connected to the conduit assembly 200 and is used to dock and connect the valve body assembly 100 with the conduit assembly 200. A one-way valve docking hole 102 is opened on the side wall of the valve body assembly 100 near one end of the conduit connector 101, and the one-way valve docking hole 102 is used to dock the one-way valve assembly 500 to achieve the function of only exhausting air outwards.

[0043] The valve body switch mounting hole 103 is a through hole, and the valve body switch 600 is rotatably connected to the valve body switch mounting hole 103. The valve body switch 600 extends to a section inside the valve body assembly 100 and is provided with a through docking hole 601. When the docking hole 601 coincides with the inner cavity of the valve body assembly 100, it is used for the puncture needle 300 to penetrate. When the docking hole 601 does not coincide with the valve body assembly 100, the channel is closed, which can prevent outside air from entering the chest cavity through the channel.

[0044] The female connector 104 and the male connector 401 are connected by a knob to achieve the connection between the puncture needle 300 and the valve body assembly 100, so that the puncture needle 300 can drive the valve body assembly 100 and the catheter assembly 200 to move synchronously when piercing the chest cavity, thereby inserting the catheter assembly 200 into the chest cavity;

[0045] In this embodiment, as shown in Figure 3, the catheter assembly 200 includes a catheter body 201, and the movable end of the catheter body 201 is provided with a plug-in portion 202. The plug-in portion 202 adopts a tapered design, which can better fit the puncture needle 300 and be inserted into the chest cavity. The catheter body 201 and the plug-in portion 202 are made of different materials, wherein the catheter body 201 is made of the material of the connecting seat 5011 valve body assembly 10066, and the plug-in portion 202 is made of the material of the connecting seat 5011 female connector 104 catheter connector 101 valve body assembly 100 valve body switch 600, and the hardness of the material of the plug-in portion 202 is lower than that of the material of the catheter body 201, ensuring that after entering the human body, the outer sleeve will not cause secondary damage to the human body such as scratches and punctures, thereby avoiding the cost increase problem similar to the use of memory materials in the comparative documents.

[0046] In another embodiment, a scale line 204 is printed on the surface of the catheter body 201 to facilitate accurate reading of the insertion depth of the puncture needle system during use.

[0047] In another embodiment, the front half of the catheter body 201 has multiple exhaust holes 203, and the multiple exhaust holes 203 are not located in the same straight line, thereby increasing the exhaust efficiency after the tube enters the human body. At the same time, by providing multiple exhaust holes 203, liquid can be prevented from entering the catheter body 201. Since the multiple exhaust holes 203 are not located in the same straight line, even if the catheter body 201 deviates from the insertion position and causes the catheter body 201 to contact the inner wall of the chest cavity or internal tissue, it will not affect the exhaust of holes in other directions. Moreover, due to the provision of multiple holes, if the catheter body 201 is inserted into the pleural fluid, the presence of these exhaust holes 203 will not drain the liquid, thereby only achieving the exhaust effect. Even if the catheter body 201 is fully inserted into the pleural fluid, the pleural fluid will not be discharged due to the lack of a negative pressure fluid extraction device. The pressure generated by the patient's breathing alone is very small and insufficient to discharge the liquid. At this time, the sound produced by the subsequent exhaust of the valve core 501 can also be used to judge the insertion temperature, and the medical staff can then adjust the insertion depth to perform only exhaust work, thereby improving the exhaust efficiency.

[0048] In this embodiment, as shown in FIG4 , the puncture needle 300 is made of medical stainless steel, and the needle tip is tapered and sharp to penetrate the skin and puncture the parietal pleura.

[0049] In this embodiment, as shown in Figures 5 to 8, the one-way valve assembly 500 includes two structures, namely a valve core 501 and a valve sleeve 502 that is sleeved on the valve core 501. At the same time, the valve sleeve 502 is clamped on the valve body assembly 100 and is mainly used to fix the valve core 501. Through these two structures, the structure of the one-way valve assembly 500 is more stable and suitable for long-term use.

[0050] The valve core 501 includes a connecting seat 5011 and a valve body 5012, wherein the valve body 5012 is made of silicone and adopts a duckbill design, and a linear exhaust port 5013 is opened at the end of the valve body 5012. A connecting column 5014 is also connected to the cross-section of the valve body 5012 near the connecting seat 5011 to improve the contact effect between the valve core 501 and the valve sleeve 502.

[0051] When exhausting, the gas can expand the valve body 5012, thereby exhausting through the exhaust port 5013, while the external gas cannot expand the valve body 5012 and cannot enter, thereby achieving a one-way exhaust effect.

[0052] In the above scheme, when the gas in the chest cavity is exhausted to the outside through the valve core 501, due to the shape design of the valve body 5012 and the linear opening of the exhaust port 5013, a sound is emitted during exhaust. The sound can be used to determine whether the pneumothorax needle is exhausting, and the degree of exhaust can also be determined by the size of the sound. After the medical staff inserts the pneumothorax needle into the patient's chest cavity, as the puncture needle 300 is gradually inserted, the gas is discharged by the contraction and relaxation of the lungs to change the chest cavity pressure.

[0053] As shown in Figure 7, the valve sleeve 502 includes a clamping seat 5021 and a sleeve 5022 connected to the clamping seat 5021. The clamping seat 5021 is clamped on the side wall of the valve body assembly 100, and the sleeve 5022 is sleeved on the valve core 501. A circular air guide hole 5023 corresponding to the position of the exhaust port 5013 is opened on the sleeve 5022. Since the air guide hole 5023 adopts a circular structure, it is convenient for the valve core 501 to expand and exhaust. Moreover, due to the existence of the valve sleeve 502, it is not easy to judge whether the exhaust hole 203 is exhausting. Therefore, it is inconvenient to judge if sound is not used.

[0054] In another embodiment, as shown in FIG8 , this embodiment further includes a syringe 700 and a needle cap 800 , which are connected to form a sealed accommodating chamber for accommodating the pneumothorax needle, thereby improving the protective effect of the pneumothorax needle.

[0055] The specific operation method is as follows:

[0056] The medical staff removes the pneumothorax needle and then inserts the pneumothorax needle into the patient's chest cavity through the puncture needle 300. The insertion depth can be judged by the puncture needle 300 on the catheter body 201. After the insertion is completed, the puncture needle 300 is removed by rotating the male connector 401. After removal, the valve body switch 600 should be quickly turned to close the needle insertion channel in the valve body assembly 100. At this time, as the patient breathes, the air changes the chest cavity pressure due to the contraction and relaxation of the lungs, thereby discharging the air from the one-way valve assembly 500. When the patient exhales, positive pressure is generated in the chest cavity, and the air is discharged. At the same time, due to the structural design of the valve core 501, the gas will expand the valve core 501, thereby discharging the air. At the same time, a sound is generated when the air is discharged. At this time, the patient can be judged to have deflated by the sound heard, and the amount of deflated gas can be judged according to the size of the sound, so as to more intuitively understand the deflated gas situation.

[0057] When the patient inhales, although there is negative pressure in the chest cavity, the outside air cannot open the valve core 501, thereby preventing gas from entering the chest cavity, forming a one-way exhaust effect, and avoiding chest cavity infection.

[0058] At the same time, the pneumothorax needle in the present invention has fewer structural components and better stability. Its one-way valve assembly 500 and valve body switch 600 both adopt a very small structural combination, which maximizes the overall stability. It also makes a sound when exhausting, making it convenient to understand the exhaust situation, and has strong practicality.

[0059] Finally, it should be noted that the pneumothorax needle involved in this solution can be used in any environment inside or outside the hospital, including outdoor sudden pneumothorax and battlefield first aid. This pneumothorax needle completely restores the traditional surgical treatment method, which is simpler and less invasive than it, ensuring that the puncture position and depth of the doctor or user during minimally invasive surgery for pneumothorax meet the treatment requirements; and quickly deflates the pneumothorax, thereby ensuring the safety of the operation and the treatment effect, greatly reducing patient mortality and body damage, greatly improving work efficiency, shortening operation time, and reducing patient pain. This pneumothorax needle is simple to operate and easy to maintain, and can be used by the patient himself in a variety of complex environments.

[0060] In the present invention, both the structure of the one-way valve assembly and the structure of the valve body switch are extremely simple, using a very small number of components to achieve the original function. On the one hand, the overall stability is improved, because the failure rate is also higher due to too many parts. On the other hand, the cost is greatly reduced, making the price of this patented product lower than that of its peers.

[0061] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any modifications may be made within the scope of protection of the present invention.

Claims

1. A pneumothorax needle using a check valve and a one-way valve structure, characterized in that: include: A valve body assembly (100) which is a tubular structure and is used for the insertion of other components and the circulation of gas; A conduit assembly (200) which is connected to one end of the valve body assembly (100); A puncture needle assembly, which is detachably fixed to the valve body assembly (100) and extends outward through the valve body assembly (100) and the catheter assembly (200); A one-way valve assembly (500) is connected to the side wall of the valve body assembly (100) and is used to discharge air in the valve body assembly (100), and emits a sound to indicate the exhaust status when exhausting air; The valve body switch (600) is rotatably arranged on the side wall of the valve body assembly (100) and controls the opening and closing of the channel in the valve body assembly (100).

2. A pneumothorax needle using a stop valve and a one-way valve structure as claimed in claim 1, characterized in that: The valve body assembly (100) is provided with a catheter connector (101), a one-way valve docking hole (102), a valve body switch mounting hole (103) and a female connector (104) in order from bottom to top, wherein the catheter connector (101) is used for through-connection with the catheter assembly (200), the one-way valve docking hole (102) is used for docking with the one-way valve assembly (500), the valve body switch mounting hole (103) is a through hole, and a valve body switch (600) is rotatably connected to the valve body switch mounting hole (103), and the sealing of the inner cavity of the valve body assembly (100) is controlled by the rotation of the valve body switch (600), and the female connector (104) is docked with the puncture needle assembly by means of a knob.

3. A pneumothorax needle using a check valve and a one-way valve structure as claimed in claim 2, characterized in that: A through-going docking hole (601) is provided on a section of the valve body switch (600) extending into the valve body assembly (100); when the docking hole (601) coincides with the inner cavity of the valve body assembly (100), the puncture needle (300) is inserted therein; and when the docking hole (601) does not coincide with the valve body assembly (100), the passage is closed.

4. A pneumothorax needle using a check valve and a one-way valve structure as claimed in claim 1, characterized in that: The puncture needle assembly comprises a puncture needle (300) and a handheld part (400). The puncture needle (300) is provided with a spike portion for puncturing the chest cavity. The puncture needle (300) is connected to an end of the handheld part (400) away from the spike portion. The puncture needle (300) is provided with a male connector (401) that is connected to a knob of a female connector (104).

5. A pneumothorax needle using a check valve and a one-way valve structure as claimed in claim 1, characterized in that: The catheter assembly (200) comprises a catheter body (201), the movable end of the catheter body (201) being provided with a plug-in portion (202), the plug-in portion (202) being designed with a taper so as to better fit the puncture needle (300) for insertion into the chest cavity, the catheter body (201) and the plug-in portion (202) being made of different materials, and the hardness of the material of the plug-in portion (202) being lower than that of the material of the catheter body (201).

6. A pneumothorax needle using a stop valve and a one-way valve structure as claimed in claim 5, characterized in that: The surface of the catheter body (201) is ring-printed with scale lines (204), which facilitate accurate reading of the insertion depth of the puncture needle system during use.

7. A pneumothorax needle using a stop valve and a one-way valve structure as claimed in claim 5, characterized in that: The front half of the catheter body (201) has a plurality of exhaust holes (203), and the plurality of exhaust holes (203) are not located on the same straight line, thereby improving the exhaust effect and limiting the entry of pleural effusion into the catheter body (201).

8. A pneumothorax needle using a stop valve and a one-way valve structure as claimed in claim 1, characterized in that: The one-way valve assembly (500) comprises a valve core (501) and a valve sleeve (502), wherein the valve sleeve (502) covers the valve core (501) and fixes the valve core (501) to the valve body assembly (100), and the valve core (501) comprises a connecting seat (5011) and a valve body (5012), wherein the valve body (5012) is made of silicone and adopts a duckbill design, and a linear exhaust port (5013) is provided at the end of the valve body (5012) so that the valve core (501) makes a sound when exhausting air; A connecting column (5014) is also connected to a section of the valve body (5012) close to the connecting seat (5011), thereby improving the contact effect between the valve core (501) and the valve sleeve (502).

9. A pneumothorax needle using a stop valve and a one-way valve structure as claimed in claim 8, characterized in that: The valve sleeve (502) comprises a clamping seat (5021) and a sleeve (5022) connected to the clamping seat (5021); the clamping seat (5021) is clamped on the side wall of the valve body assembly (100); the sleeve (5022) is sleeved on the valve core (501); and a circular air guide hole (5023) corresponding to the position of the exhaust port (5013) is provided on the sleeve (5022).

10. A pneumothorax needle using a stop valve and a one-way valve structure as claimed in claim 1, characterized in that: It also includes a syringe (700) and a needle cap (800), which, when connected, form a sealed accommodating chamber for accommodating a pneumothorax needle.

Images