Open pneumothorax emergency device

Abstract

The application belongs to the technical field of medical devices, and discloses an open pneumothorax first-aid device, which comprises a sealing patch, a support seat is arranged at the top of the sealing patch, and a one-way valve assembly is arranged at the top of the support seat; the one-way valve assembly is located at the center of the sealing patch, and comprises a valve seat connected to the support seat, a one-way valve plate is arranged in the valve seat, and the one-way valve plate is used for controlling the blocking of external air and the one-way discharge of pneumothorax gas. The elastic telescopic rod, the sealing cylinder and the support assembly can support the sealing cylinder through the stretching of the elastic telescopic rod when the sealing patch is unfolded and pasted, thereby improving the support and protection effect of the sealing cylinder on the valve seat, the valve seat is always located above the wound through the support assembly, and a vertical state is maintained, further preventing the valve seat from shaking or shifting, and improving the use effect.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and specifically relates to an emergency device for open pneumothorax. Background Technology

[0002] Open pneumothorax occurs when trauma causes full-thickness damage to the chest wall tissue, allowing outside air to enter and exit the pleural cavity through the wound. This leads to the loss of negative pressure in the affected side of the pleural cavity, causing lung collapse and mediastinal flutter, resulting in severe hypoxia and circulatory dysfunction. An open pneumothorax emergency device (commonly known as a chest seal) is a specialized first-aid instrument used to urgently close penetrating chest wall wounds and convert open pneumothorax into closed pneumothorax. Its core components are a one-way valve and a sealing dressing to prevent air from entering the pleural cavity and to expel accumulated air, thus avoiding death from tension pneumothorax.

[0003] In existing technology, the sealing tape needs to be pasted on the wound so that the one-way valve faces upward. However, during use, the chest wall rises and falls with breathing, and the sealing tape moves with it. This causes the valve seat to be pulled between the skin and the skin, which in turn causes the valve to shake and shift, affecting the effectiveness of use.

[0004] Therefore, it is necessary to invent an emergency device for open pneumothorax to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an open pneumothorax emergency device to solve the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An open pneumothorax emergency device includes a sealing patch, a support base on top of the sealing patch, and a one-way valve assembly on top of the support base.

[0008] The one-way valve assembly is located at the center of the sealing patch, and the one-way valve assembly includes:

[0009] The valve seat is connected to the support base. The valve seat is equipped with a one-way valve plate inside, which is used to control and block the entry of outside air and to discharge the pleural cavity in one direction.

[0010] A sealing cylinder is installed on the outside of the check valve, and a sealing cap is installed on the top of the sealing cylinder to protect the check valve.

[0011] A support assembly, mounted on the sealing cylinder, is used to reduce the swaying and displacement of the one-way valve.

[0012] Furthermore, a buffer layer is provided between the valve seat and the sealing strip to absorb the impact of breathing movements. Multiple fixing grooves are provided on the outside of the sealing cylinder, and the fixing grooves are distributed in a circular array on the outside of the sealing cylinder.

[0013] Furthermore, the support assembly includes an elastic support rod, a movable rod, a limiting block, and a limiting structure. The number of elastic support rods is the same as the number of fixed grooves, and one end of the elastic support rod is hinged to the inner wall of the fixed groove, while the other end is connected to the support base. A movable rod is provided inside the sealing cylinder, and a limiting block is provided at the top of the movable rod to limit the puncture needle. Installation grooves are provided on both sides of the sealing cylinder, and the limiting structure is located in the installation groove to limit the position of the movable rod and the limiting block.

[0014] Furthermore, the valve seat has a puncture-resistant elastic sealing plug inside the top of the valve seat, which is used to automatically rebound and seal after the puncture needle is removed. The moving rod is located on both sides of the valve seat, the limiting block is located on the top of the valve seat, the limiting block has a puncture port in the middle, and a fixing structure is provided inside the limiting block.

[0015] Furthermore, the limiting structure includes a movable block, a mounting plate, a first spring, and a limiting opening. The movable block is movably connected in the mounting groove. The sealing cylinder has a movable groove inside, located on the upper and lower sides of the mounting groove. The mounting plate is fixedly connected to both sides of the movable block. One end of the mounting plate is movably connected to the inner wall of the movable groove. The mounting plate is fixedly connected to the inner wall of the movable groove through the first spring. A limiting opening is provided on the side of the movable block away from the mounting plate.

[0016] Furthermore, one end of the movable block is located outside the sealing cylinder, and the other end is located inside the mounting groove. The mounting plate and the first spring are symmetrically arranged on both sides of the movable block, and the limiting opening matches the diameter of the movable rod.

[0017] Furthermore, the top of the movable rod is inserted into the top of both ends of the limiting block, and the limiting block has an installation port on the side near the movable rod. The fixing structure is located inside the installation port, and the fixing structure is symmetrically arranged at the center of the limiting block.

[0018] Furthermore, the fixing structure includes a push rod, a second spring, a fixing block, and a third spring. The push rod is connected to the limiting block via the second spring. A fixing block is provided at the bottom of the push rod. The end of the fixing block away from the push rod is inserted into one side of the moving rod. The bottom of the fixing block is slidably connected to the inner wall of the limiting block. The side of the fixing block away from the moving rod is connected to the inner wall of the limiting block via the third spring.

[0019] Furthermore, the top of the push rod is located at the top of the limiting block, the bottom of the push rod extends into the limiting block, the second spring is located on both sides of the push rod, the bottom of the push rod is a round convex shape, the side of the fixing block near the round convex shape is an inclined surface, and the round convex shape is located at the bottom end of the inclined surface.

[0020] Furthermore, a clamping block is provided in the middle of the puncture opening, and threaded rods are fixedly connected to both sides of the clamping block. A rotating block is fixedly connected to one end of the threaded rod, and a movable opening is opened on one side of the limiting block. The threaded rod is threadedly connected to the movable opening.

[0021] The technical effects and advantages of this invention are as follows:

[0022] 1. The present invention, through the elastic telescopic rod, sealing cylinder and support assembly, can support the sealing cylinder by stretching the elastic telescopic rod when the sealing and bonding are unfolded, thereby improving the support and protection effect of the sealing cylinder on the valve seat. The support assembly ensures that the valve seat is always above the wound and remains in a vertical state, further preventing the valve seat from shaking or shifting, and improving the use effect.

[0023] 2. The present invention, through the limiting block, moving rod, clamping block and fixing structure, can improve the speed of replacing damaged limiting block and clamping block, and the fixing structure can keep the valve seat stable while fixing the puncture needle, so that different sizes of puncture needles can be replaced for adjustment, thereby improving adaptability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0025] Figure 2 This is a structural diagram of the sealing sticker and sealing cylinder according to an embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional view of the sealing cylinder according to an embodiment of the present invention;

[0027] Figure 4 This is a structural diagram of the moving block, mounting plate, and first spring according to an embodiment of the present invention;

[0028] Figure 5 This is a structural diagram of the sealing cylinder and valve seat according to an embodiment of the present invention;

[0029] Figure 6 This is a cross-sectional view of the valve seat and limiting block according to an embodiment of the present invention;

[0030] Figure 7 This is a structural diagram of the fixed structure according to an embodiment of the present invention.

[0031] In the diagram: 1. Sealing sticker; 2. Support base; 3. Valve seat; 4. Sealing cylinder; 5. Sealing cap; 6. Buffer layer; 7. Fixing groove; 8. Elastic support rod; 9. Moving rod; 10. Limiting block; 11. Puncture port; 12. Moving block; 13. Mounting plate; 14. First spring; 15. Limiting port; 16. Push rod; 17. Second spring; 18. Fixing block; 19. Third spring; 20. Round convexity; 21. Clamping block; 22. Threaded rod. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0033] This invention provides an emergency device for open pneumothorax, such as... Figures 1 to 3As shown, the device includes a sealing patch 1, a support base 2, and a one-way valve assembly. The support base 2 is located on top of the sealing patch 1, covering the chest wall wound and preventing outside air from directly entering the pleural cavity. The one-way valve assembly is located on top of the support base 2, at the center of the sealing patch 1, connecting the sealing patch 1 and the valve seat 3, and dispersing the stress of chest wall movement. The one-way valve assembly includes the valve seat 3, a one-way valve plate, a sealing cylinder 4, a sealing cap 5, and a support assembly. The valve seat 3 is connected to the support base 2, and a one-way valve plate is located inside the valve seat 3 to control and block the entry of outside air and allow one-way discharge of air accumulated in the pleural cavity. The sealing cylinder 4 is located outside the one-way valve, and its bottom is fixedly connected to the top of the support base 2. The sealing cap 5 is located on the top of the sealing cylinder 4 to protect the valve seat 3 and prevent dirt and blood clots from directly entering the valve cavity and clogging the valve plate. It can be opened or punctured. The support assembly is located on the sealing cylinder 4 to reduce the shaking and displacement of the single valve seat 3. A buffer layer 6 is provided between the valve seat 3 and the sealing patch 1. The buffer layer 6 is made of medical-grade silicone material to absorb the impact of respiratory movements and prevent the valve seat 3 from directly compressing the chest wall. Multiple fixing grooves 7 are provided on the outer side of the sealing cylinder 4. The fixing grooves 7 are arranged in a circular array on the outer side of the sealing cylinder 4. The support assembly includes an elastic support rod 8, a moving rod 9, a limiting block, a limiting block 10, and a limiting structure. The number of elastic support rods 8 is the same as the number of fixing grooves 7. One end of the elastic support rod 8 is hinged to the inner wall of the fixing groove 7, and the other end is connected to the support base 2. The elastic support rod 8 is made of medical-grade silicone material, which can provide elastic support during respiratory movements, reduce the shaking and displacement of the one-way valve assembly, and avoid irritation or damage to the human body. A moving rod 9 is provided inside the sealing cylinder 4. A limiting block 10 is provided on the top of the moving rod 9 to limit the puncture needle. A limiting block is fixedly connected to the moving rod 9. One side of the limiting block is slidably connected to the inner wall of the sealing cylinder 4. Installation grooves are provided on both sides of the sealing cylinder 4. The limiting structure is located in the installation groove to limit the position of the moving rod 9 and the limiting block 10.

[0034] Apply the sealing patch 1 to the wound. When the sealing patch 1 is applied, the elastic support rod 8 is evenly distributed around the sealing cylinder 4, providing support and rebound force when the valve seat 3 shakes, preventing displacement or excessive swaying. Then open the sealing cover 5 to expose the valve seat 3. The valve seat 3 is located at the top of the wound, ensuring the valve opening is always in a high position, away from areas of fluid accumulation, reducing the probability of blood clots or secretions submerging or blocking the valve opening, and efficiently draining pneumothorax. When the negative pressure in the pleural cavity increases, the one-way valve plate, under negative pressure, presses tightly against the sealing surface of the valve seat 3, completely closing and preventing outside air from entering the pleural cavity through the wound, converting an open pneumothorax into a closed pneumothorax and eliminating mediastinal shift. When the positive pressure in the pleural cavity increases, the gas pushes the one-way valve plate open, allowing the pneumothorax to be discharged through the valve seat 3, preventing the accumulation of gas into high pressure. During respiratory movements or changes in body position, the buffer layer 6 first absorbs the impact of chest wall fluctuations, reducing direct vibration of the valve seat 3. When valve seat 3 is blocked by blood clots or secretions, causing tension pneumothorax, first pull the moving rod 9 to move the limiting block 10 out of the sealing cover 5. The limiting block moves upward along the inner wall of the sealing cylinder 4. Through the cooperation of the limiting block 10 and the moving rod 9, the puncture needle can be guided to puncture the pleural cavity along the central channel of valve seat 3, so that the puncture needle is kept in a vertical position to avoid puncturing or damaging the one-way valve plate. The limiting structure can fix the position of the moving rod 9 and the limiting block 10 to ensure stable positioning during puncture. After the air is expelled, the needle is pulled out, and the elastic sealing layer automatically closes, restoring the one-way valve function.

[0035] like Figures 2 to 3 As shown, the valve seat 3 has a puncture-resistant elastic sealing plug made of medical-grade silicone inside its top end. This plug automatically rebounds and seals after the puncture needle is removed, maintaining the sealing function of the one-way valve. The moving rod 9 is located on both sides of the valve seat 3, and the limiting block 10 is located on the top of the valve seat 3. A puncture port 11 is provided in the middle of the limiting block 10 to guide the insertion of the puncture needle. A fixing structure is provided inside the limiting block 10. The top of the moving rod 9 is inserted into the top of both ends of the limiting block 10. An installation port is provided on the side of the limiting block 10 near the moving rod 9. The fixing structure is located inside the installation port and is symmetrically arranged at the center of the limiting block 10 to fix the relative position of the moving rod 9 and the limiting block 10, ensuring stable positioning during puncture and preventing displacement of the limiting block 10 that could cause puncture deviation.

[0036] The valve seat 3 is kept sealed by a puncture-resistant elastic sealing plug, ensuring the one-way venting function is not affected and protecting the internal one-way valve plate from blockage. When the valve seat 3 is blocked by blood clots or secretions and emergency venting is required, the moving rod 9 and the limiting block 10 are moved upwards, causing the limiting block 10 to move to the top of the sealing channel. This aligns the puncture port 11 with the puncture-resistant elastic sealing plug at the center of the valve seat 3. The position is then locked by a fixing structure, which continuously maintains the position of the limiting block 10 and the moving rod 9, ensuring stable positioning during puncture. The puncture needle is then inserted through the puncture port 11 in the middle of the limiting block 10, passing through the puncture-resistant elastic sealing plug and the internal guide channel of the valve seat 3, entering the thoracic cavity to release high-pressure gas. After venting, the puncture needle is withdrawn. The puncture-resistant elastic sealing plug automatically rebounds to close the needle hole, restoring the seal on the valve seat 3 and preventing backflow of outside air.

[0037] like Figures 3 to 5 As shown, the limiting structure includes a movable block 12, a mounting plate 13, a first spring 14, and a limiting opening 15. The movable block 12 is movably connected in the mounting groove. The sealing cylinder 4 has a movable groove inside, located on the upper and lower sides of the mounting groove. The mounting plate 13 is fixedly connected to both sides of the movable block 12. One end of the mounting plate 13 is movably connected to the inner wall of the movable groove. The first spring 14 is fixedly connected to the mounting plate 13, and one end of the first spring 14 is fixedly connected to the inner wall of the movable groove. The mounting plate 13 is fixedly connected to the inner wall of the movable groove through the first spring 14 to constrain the movement direction of the movable block 12 and prevent deviation. A limiting opening 15 is provided on the side of the movable block 12 away from the mounting plate 13. One end of the movable block 12 is located outside the sealing cylinder 4, and the other end is located inside the mounting groove. The mounting plate 13 and the first spring 14 are symmetrically arranged on both sides of the movable block 12. The limiting opening 15 matches the diameter of the movable rod 9 to clamp the movable rod 9 and achieve position locking.

[0038] When puncture is required, move the moving rod 9 and the limiting block 10 upwards, so that the limiting block 10 moves to the top of the valve seat 3. The limiting block moves along the inner wall of the sealing cylinder 4. Press the end of the moving block 12 on the outside of the sealing cylinder 4 with your finger, so that the moving block 12 moves along the mounting groove. The mounting plate 13 moves along the movable groove and squeezes the first spring 14. When one end of the moving block 12 moves into the sealing cylinder 4, the limiting port 15 is located at the bottom of the moving rod 9. Then move the moving rod 9 downwards to connect the moving rod 9 with the limiting port 15. The moving rod 9 and the limiting block 10 are locked in the current position through the limiting port 15 to prevent the valve seat 3 from shaking or shifting during puncture. Then puncture is performed through the puncture needle. After the puncture is completed, remove the puncture needle, move the moving rod 9 and the limiting block 10 upwards so that the bottom of the moving rod 9 separates from the limiting port 15, pull the moving block 12 outwards from the sealing cylinder 4, and under the action of the first spring 14, the moving block 12 drives the mounting plate 13 to move to its original position. Then move the moving rod 9 downwards so that the limiting block 10 moves into the interior of the sealing cylinder 4 for continued use.

[0039] like Figures 6 to 7 As shown, the fixing structure includes a push rod 16, a second spring 17, a fixing block 18, and a third spring 19. The push rod 16 is connected to the limiting block 10 via the second spring 17. The bottom end of the second spring 17 is fixedly connected to the limiting block 10. A fixing block 18 is provided at the bottom of the push rod 16. An insertion interface is provided on one side of the moving rod 9. The end of the fixing block 18 away from the push rod 16 is inserted into the insertion interface on one side of the moving rod 9. The bottom of the fixing block 18 is slidably connected to the inner wall of the limiting block 10. A groove is provided inside the fixing block 18. A third spring 19 is fixedly connected to the inner wall of the limiting block 10. The push rod 16 is T-shaped, with its top located at the top of the limiting block 10 and its bottom extending into the limiting block 10. The second spring 17 is located on both sides of the push rod 16 and is symmetrically distributed. The push rod 16 and the fixed block 18 are subjected to uniform force to avoid jamming or tilting. The bottom of the push rod 16 is a round convex 20, and the side of the fixed block 18 near the round convex 20 is a slope, with the round convex 20 located at the bottom of the slope.

[0040] The moving rod 9 is fixed by the fixing block 18, so that the connection between the limiting block 10 and the moving rod 9 remains stable. When the limiting block 10 is worn or damaged and needs to be replaced, or when it is necessary to install a clamping block 21 of different sizes to accommodate puncture needles of different sizes, the pushing rod 16 is moved upward and the second spring 17 is stretched, so that the round protrusion 20 at the bottom of the pushing rod 16 moves upward and no longer presses the inclined surface of the fixing block 18. Under the action of the restoring force of the third spring 19, the fixing block 18 slides away from the moving rod 9. The end of the fixing block 18 moves out of the insertion interface in the moving rod 9, releasing the clamping constraint on the moving rod 9. Then, the new limiting block 10 and clamping block 21 are replaced, so that the moving rod 9 is inserted into the bottom of the new limiting block 10. After the pushing rod 16 is released, the second spring 17 drives the pushing rod 16 to move to its original position, so that the round protrusion 20 at the bottom of the pushing rod 16 slides back to the bottom end along the inclined surface. The fixing block 18 is pushed again to move towards the moving rod 9. The end of the fixing block 18 is reinserted into the moving rod 9, completing the position locking and restoring the stable state.

[0041] like Figure 6 As shown, a clamping block 21 is provided in the middle of the puncture port 11. There are two clamping blocks 21, and they are symmetrically arranged in the center of the limiting block 10. One clamping block 21 is fixedly connected to an insert block, and the other clamping block 21 has a slot. The insert block is inserted into the slot to clamp the puncture needle body, so as to prevent shaking or deflection during puncture and ensure that the needle body is inserted along the center of the valve seat 3. Threaded rods 22 are fixedly connected to both sides of the clamping block 21. A rotating block is fixedly connected to one end of the threaded rod 22. A movable port is opened on one side of the limiting block 10. The threaded rod 22 is threadedly connected to the movable port. The clamping block 21 can be moved forward and backward by rotation.

[0042] When puncture is required, in the initial state, the clamping block 21 is located inside the limiting block 10, which protects the clamping block 21. The clamping block 21 is in the open state, with the puncture port 11 at its maximum inner diameter. The puncture needle is then inserted, passing through the puncturable elastic sealing plug, in preparation for venting and decompression. The rotating blocks on both sides are rotated by hand, causing the threaded rod 22 to rotate towards the center along the moving port, pushing the clamping block 21 towards the puncture needle. When the clamping block 21 is tightly against the outer wall of the puncture needle, the insert block engages with the slot, and then the rotation stops, clamping the needle body at the center of the puncture port 11 to prevent shaking, displacement, or puncturing of the internal one-way valve plate during puncture. After venting is completed, the rotating blocks are rotated in the opposite direction, causing the threaded rod 22 to rotate outward, and the clamping block 21 releases the puncture needle, allowing for easy needle removal.

[0043] Working principle of this invention:

[0044] Reference Figures 1 to 7 As shown, during use, open the sealing cap 5 to expose the valve seat 3, and apply the sealing patch 1 to the chest wall wound. The valve seat 3 is positioned high on the wound, causing gas to rise and fluid to sink. When the sealing patch 1 completely covers the wound, it blocks outside air from directly entering the chest cavity. When the sealing patch 1 is tightly attached, the elastic support rod 8 expands outward along the circumference of the sealing cylinder 4, forming a uniform elastic support for the sealing cylinder 4, keeping the one-way valve assembly in the center position. The buffer layer 6 absorbs the impact of chest wall movement, reduces the vibration of the valve seat 3, and reduces shaking and displacement. When the patient inhales, a negative pressure is formed in the chest cavity, and the one-way valve plate closes tightly against the sealing surface of the valve seat 3, preventing outside air from entering. When the patient exhales, the pressure in the chest cavity increases, the gas pushes open the one-way valve plate, and the accumulated gas is discharged from the valve seat 3, avoiding excessive pressure in the chest cavity and preventing tension pneumothorax.

[0045] When the single valve seat 3 is blocked by blood clots or secretions, preventing air release and causing tension pneumothorax, the moving rod 9 is pulled upwards. The limiting block slides along the inner wall of the sealing cylinder 4, guiding the limiting block 10 upwards. The moving block 12, which presses into the sealing cylinder 4, compresses the first spring 14. The mounting plate 13 moves along the movable groove, causing the limiting port 15 to move to the bottom of the moving rod 9. After adjusting the moving rod 9 and the limiting block 10 to a suitable height, the moving rod 9 is moved downwards, allowing it to engage with the limiting port 15 and complete the height locking. The puncture needle is then inserted into the puncture port 11. The rotating block is rotated, driving the threaded rod 22 and the clamping block 21 to move towards the center. The needle body is clamped by the insertion block and the slot, ensuring that the puncture needle is vertically centered. The puncture needle passes through the puncture-compatible elastic sealing plug at the top of the valve seat 3 and enters the thoracic cavity along the central guide channel inside the valve seat 3. Air release is completed above the one-way valve plate, releasing high-pressure gas. After air release, the needle is withdrawn, and the puncture-compatible elastic sealing plug automatically springs back to seal the needle hole, restoring the one-way valve sealing function.

[0046] When it is necessary to replace the limiting block 10 or the clamping block 21 of a different size, move the push rod 16 upward, causing the second spring 17 to stretch. This causes the round protrusion 20 at the bottom of the push rod 16 to move upward and no longer press against the inclined surface of the fixed block 18. Under the restoring force of the third spring 19, the fixed block 18 slides away from the moving rod 9. The end of the fixed block 18 moves out of the insertion interface in the moving rod 9. Then, replace the new limiting block 10 with the clamping block 21, so that the moving rod 9 is inserted into the bottom of the new limiting block 10. After releasing the push rod 16, under the action of the second spring 17, the push rod 16 moves back to its original position, causing the round protrusion 20 at the bottom of the push rod 16 to slide back to the bottom end along the inclined surface. Push the fixed block 18 again towards the moving rod 9, and the end of the fixed block 18 is reinserted into the moving rod 9, completing the replacement.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. An emergency device for open pneumothorax, characterized in that, include: A sealing sticker (1) is provided with a support base (2) on its top, and a one-way valve assembly is provided on the top of the support base (2); the one-way valve assembly is located at the center of the sealing sticker (1), and the one-way valve assembly includes: A valve seat (3) is connected to a support seat (2). The valve seat (3) is equipped with a one-way valve plate inside, which is used to control the blocking of outside air from entering and to discharge the pleural cavities in one direction. A sealing cylinder (4) is provided on the outside of the check valve, and a sealing cap (5) is provided on the top of the sealing cylinder (4) to protect the check valve; A support assembly is provided on the sealing cylinder (4) to reduce the swaying and displacement of the one-way valve.

2. The open pneumothorax emergency device according to claim 1, characterized in that: A buffer layer (6) is provided between the valve seat (3) and the sealing sticker (1) to absorb the impact of breathing. Multiple fixing grooves (7) are provided on the outside of the sealing cylinder (4), and the fixing grooves (7) are arranged in a circular array on the outside of the sealing cylinder (4).

3. The open pneumothorax emergency device according to claim 2, characterized in that: The support assembly includes an elastic support rod (8), a movable rod (9), a limiting block (10), and a limiting structure. The number of elastic support rods (8) is the same as the number of fixed grooves (7). One end of the elastic support rod (8) is hinged to the inner wall of the fixed groove (7), and the other end is connected to the support base (2). The movable rod (9) is provided inside the sealing cylinder (4). The limiting block (10) is provided on the top of the movable rod (9) to limit the puncture needle. The sealing cylinder (4) has mounting grooves on both sides. The limiting structure is located in the mounting groove and is used to limit the position of the movable rod (9) and the limiting block (10).

4. The open pneumothorax emergency device according to claim 3, characterized in that: The valve seat (3) has a puncture-resistant elastic sealing plug inside its top end, which is used to automatically rebound and seal after the puncture needle is removed. The moving rod (9) is located on both sides of the valve seat (3). The limiting block (10) is located on the top of the valve seat (3). The limiting block (10) has a puncture port (11) in the middle. The limiting block (10) has a fixing structure inside.

5. The open pneumothorax emergency device according to claim 4, characterized in that: The limiting structure includes a movable block (12), a mounting plate (13), a first spring (14), and a limiting opening (15). The movable block (12) is movably connected in the mounting groove. The sealing cylinder (4) has a movable groove inside. The movable groove is located on the upper and lower sides of the mounting groove. The mounting plate (13) is fixedly connected to both sides of the movable block (12). One end of the mounting plate (13) is movably connected to the inner wall of the movable groove. The mounting plate (13) is fixedly connected to the inner wall of the movable groove through the first spring (14). The limiting opening (15) is opened on the side of the movable block (12) away from the mounting plate (13).

6. The emergency device for open pneumothorax according to claim 5, characterized in that: One end of the movable block (12) is located outside the sealing cylinder (4), and the other end is located inside the mounting groove. The mounting plate (13) and the first spring (14) are symmetrically arranged on both sides of the movable block (12). The limiting opening (15) matches the diameter of the movable rod (9).

7. The open pneumothorax emergency device according to claim 6, characterized in that: The top of the movable rod (9) is inserted into the top of both ends of the limiting block (10). The limiting block (10) has an installation port on the side near the movable rod (9). The fixing structure is located inside the installation port and is symmetrically arranged at the center of the limiting block (10).

8. The open pneumothorax emergency device according to claim 7, characterized in that: The fixing structure includes a push rod (16), a second spring (17), a fixing block (18) and a third spring (19). The push rod (16) is connected to the limiting block (10) through the second spring (17). The bottom of the push rod (16) is provided with a fixing block (18). The end of the fixing block (18) away from the push rod (16) is inserted into the side of the moving rod (9). The bottom of the fixing block (18) is slidably connected to the inner wall of the limiting block (10). The side of the fixing block (18) away from the moving rod (9) is connected to the inner wall of the limiting block (10) through the third spring (19).

9. The emergency device for open pneumothorax according to claim 8, characterized in that: The top of the push rod (16) is located at the top of the limiting block (10), the bottom end of the push rod (16) extends into the limiting block (10), the second spring (17) is located on both sides of the push rod (16), the bottom of the push rod (16) is a round convex (20), the side of the fixing block (18) near the round convex (20) is an inclined surface, and the round convex (20) is located at the bottom end of the inclined surface.

10. The emergency device for open pneumothorax according to claim 8, characterized in that: A clamping block (21) is provided in the middle of the puncture-limiting opening (11). Threaded rods (22) are fixedly connected to both sides of the clamping block (21). A rotating block is fixedly connected to one end of the threaded rod (22). A movable opening is provided on one side of the limiting block (10). The threaded rod (22) is threadedly connected to the movable opening.

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