Portable thoracocentesis integrated device

Abstract

The invention provides a portable thoracocentesis integrated device, and belongs to the technical field of medical instruments. Comprising a shell and an auxiliary puncture unit, a base is slidably connected to the bottom of the shell, a graduated scale is arranged on the base, a first limiting block is fixedly connected to the base, and a third limiting block and a fifth limiting block are fixedly connected to the inner side of the shell; the auxiliary puncture unit is used for inserting the drainage tube and the puncture needle into the body of a patient, and the auxiliary puncture unit is connected with the shell. By arranging the auxiliary puncture unit, medical staff can rapidly insert a puncture needle and a drainage tube into the thoracic cavity of a patient at the same time, time and labor are saved, and the working efficiency of the medical staff is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a portable thoracentesis integrated device. BACKGROUND

[0002] Thoracentesis is a medical procedure used to diagnose or treat conditions such as pleural effusion, pneumothorax, etc. Before the operation, the doctor assesses the patient, locates the puncture point with ultrasound, and the patient faces the chair, places the forearm on the chair, and places the forehead on it. The skin is disinfected with iodophor as the center of the puncture point, a sterile hole towel is laid, and after local anesthesia, the puncture point is located with ultrasound and the needle is inserted. A soft guide wire is sent into the chest through the puncture needle core, the guide wire is fixed and the puncture needle is pulled out, the drainage tube is placed along the guide wire to the appropriate depth, then the guide wire is pulled out, the drainage tube is left in the chest and properly fixed, and the tail end of the drainage tube is connected to a sterile water seal bottle for collecting gas or a drainage bag for collecting effusion for collection and examination. Therefore, the current clinical completion of a thoracentesis operation requires multiple steps and multiple instruments to assist. This method is time-consuming and labor-intensive, and the work efficiency is low. At the same time, in emergency situations, treatment may be delayed. When the patient has an emergency (such as tension pneumothorax), it is crucial to quickly complete the thoracentesis operation.

[0003] Therefore, the present application provides a portable thoracentesis integrated device to meet the needs. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a portable thoracentesis integrated device. By providing an auxiliary puncture unit, medical personnel can quickly insert a puncture needle and a drainage tube into a patient's chest, saving time and effort, and effectively improving the work efficiency of medical personnel. Through the above settings, the problem that medical personnel need multiple steps and multiple instruments to assist to complete the puncture work when puncturing in front of the chest can be solved.

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] A portable thoracentesis integrated device, comprising a shell, characterized in that it further comprises an auxiliary puncture unit, the auxiliary puncture unit is installed in the shell, the bottom of the shell is slidably connected with a base, the base is provided with a scale, the base is fixedly connected with a first limiting block, the inner side of the shell is fixedly connected with a third limiting block and a fifth limiting block; the first limiting block is used for limiting the auxiliary puncture unit; the auxiliary puncture unit is used for inserting a drainage tube and a puncture needle into a patient's body, and the drainage tube is sleeved outside the puncture needle.

[0007] Optionally, the auxiliary puncture unit comprises an ejecting frame slidingly connected in the shell, the ejecting frame comprises a top horizontal plate slidingly connected in the shell, a fixed groove is fixedly connected to the top end of the top horizontal plate, a first limiting groove is formed in the top horizontal plate, the fixed groove and the first limiting groove are exposed outside the shell, an ejecting vertical plate is fixedly connected to the bottom of the top horizontal plate, an ejecting horizontal rod is fixedly connected to the ejecting vertical plate, a limiting protrusion is fixedly connected to the end of the ejecting horizontal rod away from the ejecting vertical plate, a bottom horizontal plate is fixedly connected to the bottom of the ejecting vertical plate, a second spring is sleeved on the ejecting horizontal rod, the ejecting vertical plate and the fifth limiting block are arranged at the two ends of the second spring, the ejecting horizontal rod is inserted into the second limiting block, a third spring is fixedly connected to the top end of the second limiting block, and the third spring is fixedly connected to the inner wall of the shell at the end away from the second limiting block.

[0008] Optionally, the first limiting groove is fixedly connected with a limiting buckle at the top end.

[0009] Optionally, a third limiting block is arranged in the shell, a reset horizontal rod is inserted into the third limiting block, a first spring is sleeved on the reset horizontal rod, a reset seat is fixedly connected to one end of the reset horizontal rod, and the first spring is fixedly connected to the reset seat and the third limiting block at the two ends.

[0010] Optionally, a buffer pad is inserted into the end of the reset horizontal rod away from the reset seat.

[0011] Optionally, a fourth limiting block is fixedly connected to the shell, a cover plate is arranged in the fourth limiting block, a supporting frame and a skin breaking seat are rotatably connected to the end of the cover plate away from the fourth limiting block.

[0012] Optionally, a skin breaking needle is inserted into the skin breaking seat.

[0013] Optionally, a push handle is fixedly connected to the skin breaking needle.

[0014] Optionally, a second limiting groove is formed in the shell.

[0015] Optionally, a connecting pipe is sleeved and communicated with the drainage tube.

[0016] Compared with the prior art, the present application has at least the following advantages:

[0017] In the above scheme, by setting the auxiliary puncture unit, the medical staff presses the second limiting block upward, and then the hole cavity on the second limiting block moves upward. At this time, the second limiting block no longer limits the limiting convex head. Thus, the second spring in the compression state moves the ejector frame quickly to the skin breaking needle direction due to the elastic rebound, and then drives the puncture needle and the drainage tube to quickly insert into the patient's chest cavity. Therefore, the auxiliary puncture unit can quickly insert the puncture needle and the drainage tube into the patient's chest cavity at the same time, saving time and effort, effectively improving the work efficiency of medical staff, and quickly completing the chest puncture when the patient has an emergency.

[0018] By setting the skin breaking seat, the skin breaking needle and the push hand, the supporting frame is first placed on both sides of the puncture point of the patient to position the entire device, so that the device does not move during puncture, thereby affecting the puncture effect. The skin breaking seat is rotated to the horizontal state, the medical staff pushes the push hand to break the surface skin of the patient, and then pulls back the push hand and rotates the skin breaking seat to the vertical state to prepare for the subsequent insertion of the puncture needle and the drainage tube into the patient's body. Therefore, puncture work can be completed without the assistance of multiple instruments, saving time and effort.

[0019] By setting the fixing groove, the first limiting groove, the second limiting groove and the cover plate, the trajectory of the puncture needle and the drainage tube can be fixed during the puncture process, and the puncture point can be stably inserted.

[0020] By setting the reset horizontal rod, the first spring, the reset seat, the third limiting block and the buffer pad, after the medical staff completes the puncture work, the second limiting block is pressed by the left hand, the reset seat is pressed by the right hand to drive the reset horizontal rod and the buffer pad to move. The buffer pad drives the ejector frame to move, and then drives the limiting convex head and the ejecting horizontal rod to pass through the hole cavity of the second limiting block. The second limiting block is released from the pressing. The second limiting block moves downward due to the elastic recovery of the third spring. Therefore, the fixation of the limiting convex head is completed for subsequent use again. The device has a simple structure, is easy to operate, and effectively improves the work efficiency of medical staff. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present application and, together with the description, further serve to explain the principles of the present application and to enable a person skilled in the relevant art to implement and use the present application.

[0022] Figure 1 A perspective view of a portable chest puncture integrated device;

[0023] Figure 2 A perspective view of the skin breaking seat when rotated to the vertical state;

[0024] Figure 3 A perspective view of the inside of a portable chest puncture integrated device;

[0025] Figure 4A schematic diagram of the three-dimensional structure of the auxiliary puncture unit in conjunction with the repositioning structure;

[0026] Figure 5 A three-dimensional schematic diagram of the catapult mounting in conjunction with the second limiting block;

[0027] Figure 6 This is a three-dimensional structural diagram of the puncture needle and drainage tube.

[0028] Figure label:

[0029] 1. Outer shell; 2. Base; 3. Scale; 4. Cover plate; 5. Support frame; 6. Abrasion seat; 7. Abrasion needle; 8. Push handle; 9. Reset seat; 10. First spring; 11. Drainage tube; 12. Connecting tube; 13. Limiting buckle; 14. First limiting block; 15. Ejector frame; 16. Second spring; 17. Second limiting block; 18. Third spring; 19. Bottom horizontal plate; 20. Ejection vertical plate; 21. Ejection horizontal bar; 22. Limiting protrusion; 23. Top horizontal plate; 24. Fixing groove; 25. First limiting groove; 26. Third limiting block; 27. Reset horizontal bar; 28. Buffer pad; 29. ​​Fourth limiting block; 30. Fifth limiting block; 31. Second limiting groove; 32. Puncture needle.

[0030] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0031] The portable thoracentesis device provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0032] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0033] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0034] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0035] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0036] like Figures 1 to 6 As shown, an embodiment of the present invention provides a portable thoracentesis device, including a shell 1 and an auxiliary puncture unit. A base 2 is slidably connected to the bottom of the shell 1. A scale 3 is provided on the base 2. A first limiting block 14 is fixedly connected to the base 2. A third limiting block 26 and a fifth limiting block 30 are fixedly connected to the inner side of the shell 1. The fifth limiting block 30 and the third limiting block 26 are respectively located on both sides of the first limiting block 14.

[0037] The auxiliary puncture unit is used to insert the drainage tube 11 and the puncture needle 32 into the patient's body. The drainage tube 11 is sleeved outside the puncture needle 32. The auxiliary puncture unit is connected to the outer shell 1. The drainage tube 11 is sleeved and connected to the connecting tube 12. Before thoracentesis, medical staff confirm the puncture point and puncture depth through medical imaging. By setting the first limiting block 14 and the scale 3 on the base 2, the forward ejection distance of the auxiliary puncture unit can be limited. In this way, the puncture needle 32 and the drainage tube 11 can be accurately inserted into the patient's required position. Then, the portable thoracentesis device is removed, the puncture needle 32 is pulled out, and the drainage tube 11 is left in the patient's body and fixed. Then, the connection tube 12 is used to connect to a sterile water-seal bottle for collecting gas or a drainage bag for collecting effusion for collection and testing.

[0038] like Figures 3 to 5 As shown, the auxiliary puncture unit includes a catapult frame 15 slidably connected within the outer casing 1. The catapult frame 15 includes a top horizontal plate 23 slidably connected within the outer casing 1. A fixing groove 24 is fixedly connected to the top of the top horizontal plate 23 for placing the handle of the puncture needle 32. A first limiting groove 25 is provided on the top horizontal plate 23. A catapult vertical plate 20 is fixedly connected to the bottom of the top horizontal plate 23. A catapult horizontal bar 21 is fixedly connected to one side of the catapult vertical plate 20. A limiting protrusion 22 is fixedly connected to the end of the catapult horizontal bar 21 away from the catapult vertical plate 20. A bottom horizontal plate 19 is fixedly connected to the bottom of the catapult vertical plate 20. A second spring 16 is sleeved on the catapult horizontal bar 21. The catapult vertical plate 20 and a fifth limiting block 30 are provided at both ends of the second spring 16. The second spring 16 and the limiting protrusion 22 are on both sides of the fifth limiting block 30. In the initial state, the fifth limiting block 30 abuts against the second spring 16.

[0039] The ejection crossbar 21 is inserted through the second limiting block 17. The limiting protrusion 22 and the fifth limiting block 30 are located on both sides of the second limiting block 17. The top of the second limiting block 17 is fixedly connected to the third spring 18. The end of the third spring 18 away from the second limiting block 17 is fixedly connected to the outer shell 1. The top of the first limiting groove 25 is fixedly connected to the limiting buckle 13. The head of the outer shell 1 is provided with the second limiting groove 31, with the direction of the limiting protrusion 22 as the tail of the outer shell 1.

[0040] The top horizontal plate 23 and the bottom horizontal plate 19 are slidably connected to the grooves opened inside the outer shell 1. The grooves can limit the top horizontal plate 23 and the bottom horizontal plate 19 to slide laterally along the grooves, thereby ensuring that the ejector frame 15 can drive the puncture needle 32 and the drainage tube 11 to be inserted stably and accurately into the patient's body. The bottom of the second limiting block 17 penetrates through the bottom of the outer shell 1 and protrudes outside the outer shell 1. A cavity is opened on the second limiting block 17, and the ejector crossbar 21 passes through the cavity. In the normal position, the top wall of the ejector crossbar 21 abuts against the top inner wall of the cavity to limit the limiting protrusion 22.

[0041] Medical staff press the second limiting block 17 upwards, causing the cavity on the second limiting block 17 to move upwards. At this time, the second limiting block 17 no longer limits the limiting protrusion 22. As a result, the second spring 16, which is under pressure, causes the ejector frame 15 to move rapidly towards the piercing needle 7 due to its elastic rebound. The direction of the piercing needle 7 is located in the direction of the head of the outer shell 1. The fifth limiting block 30 limits the ejector frame 15 to move towards the tail direction, and does not limit it in the opposite direction.

[0042] This causes the puncture needle 32 and drainage tube 11 to move rapidly toward the puncture needle 7, thereby assisting the puncture unit in quickly inserting the puncture needle 32 and drainage tube 11 into the patient's chest cavity simultaneously. This portable integrated thoracentesis device has a simple structure and is easy to operate, which can effectively improve the work efficiency of medical staff. It does not require medical staff to complete the procedure with multiple steps and instruments as in traditional thoracentesis. At the same time, when a patient has an emergency and needs thoracentesis, this portable integrated thoracentesis device can complete the procedure quickly.

[0043] like Figure 3 and Figure 4 As shown, the reset structure includes a reset crossbar 27, the third limiting block 26 inserts the reset crossbar 27, the reset crossbar 27 is fitted with a first spring 10, the end of the reset crossbar 27 is fixedly connected to a reset seat 9, the two ends of the first spring 10 are fixedly connected to the reset seat 9 and the third limiting block 26, the end of the reset crossbar 27 away from the reset seat 9 is inserted with a buffer pad 28, the buffer pad 28 is made of soft rubber, when the ejector 15 is ejected at a relatively fast speed and hits the reset crossbar 27, the buffer pad 28 can play a buffering role and reduce equipment damage. The head side wall of the outer shell 1 is provided with a hollow so that the reset seat 9 is exposed outside the outer shell 1.

[0044] When the ejection vertical plate 20 at the end of the ejection frame 15 contacts the buffer pad 28 and the ejection frame 15 is to be limited, the medical staff presses the second limiting block 17 with their left hand and the reset seat 9 with their right hand, which moves the reset crossbar 27 and the buffer pad 28 toward the second limiting block 17. The buffer pad 28 moves the ejection frame 15, which in turn moves the limiting protrusion 22 and the ejection crossbar 21 through the cavity of the second limiting block 17. At this time, the pressure on the second limiting block 17 is released. As the third spring 18 recovers its elasticity, the second limiting block 17 moves down, thus completing the fixation of the limiting protrusion 22.

[0045] like Figures 1 to 3As shown, a fourth limiting block 29 is fixedly connected to the outer shell 1. The fourth limiting block 29 is located at one end of the second limiting groove 31 near the tail of the outer shell 1. A cover plate 4 is installed inside the fourth limiting block 29. After installation, the cover plate 4 is located on the second limiting groove 31. A support frame 5 and a puncture seat 6 are rotatably connected to the end of the cover plate 4 away from the fourth limiting block 29. A puncture needle 7 is inserted into the puncture seat 6. A pusher 8 is fixedly connected to the puncture needle 7. Before puncture, the medical staff inserts the puncture needle 32 into the drainage tube 11, and then inserts the handle of the puncture needle 32 from the handle end, i.e., the tail of the outer shell 1, into the fixing groove 24, and then passes through the first limiting groove 25 and the second limiting groove 31 in sequence. 1 is used to limit the puncture needle 32 and drainage tube 11. Then, the upper limit buckle 13 is engaged, and the cover plate 4 is placed inside the fourth limiting block 29 and fixed to the outer shell 1. This ensures that the puncture needle 32 and drainage tube 11 have a fixed trajectory during puncture and are stably inserted into the puncture point. Before puncture, the medical staff first places the support frame 5 on both sides of the patient's puncture point, which can play a role in positioning the entire device to prevent the device from shifting during puncture and thus affecting the puncture effect. The skin-piercing seat 6 is rotated to a horizontal position. The medical staff pushes the pusher 8 to make the skin-piercing needle 7 pierce the surface skin of the patient's puncture point, and then pulls back the pusher 8 and rotates the skin-piercing seat 6 to a vertical position (e.g., Figure 2 As shown in the figure, this prepares for the subsequent insertion of the puncture needle 32 and drainage tube 11 into the patient's body, so that the puncture can be completed without the assistance of multiple instruments, saving time and effort. The puncture needle 32 has a handle at the tail end, which protrudes from the drainage tube 11.

[0046] The working principle of the technical solution provided by this invention is as follows:

[0047] During use, medical staff assess the patient before the procedure and use ultrasound to locate the puncture point and depth. A first limiting block 14 and a scale 3 on the base 2 limit the forward ejection distance of the auxiliary puncture unit. Sliding the base 2 moves the first limiting block 14 to determine the movement distance of the ejector frame 15, thus accurately inserting the puncture needle 32 and drainage tube 11 into the desired position on the patient. The medical staff presses the second limiting block 17 with their left hand and the reset seat 9 with their right hand, moving the reset crossbar 27 and the buffer pad 28. The buffer pad 28 contacts and moves the ejector frame 15, which in turn moves the limiting protrusion 22 and... The ejector bar 21 passes through the cavity of the second limiting block 17. At this point, the pressure on the second limiting block 17 is released, and the second limiting block 17 moves downwards due to the return of elasticity of the third spring 18, thus fixing the limiting protrusion 22. The puncture needle 32 is inserted into the drainage tube 11. Then, the handle of the puncture needle 32 is placed from the handle end into the fixing groove 24, and then passes through the first limiting groove 25 and the second limiting groove 31 in sequence. The upper limit buckle 13 is then engaged, and the cover plate 4 is placed into the fourth limiting block 29 and fixed to the outer shell 1. This ensures that the puncture needle 32 and the drainage tube 11 maintain a fixed trajectory during puncture, ensuring stable insertion. Before puncture, medical staff place the support frame 5 on both sides of the puncture point to position the entire device and prevent displacement during puncture, which could affect the puncture effect. The skin-piercing seat 6 is rotated to a horizontal position. The medical staff pushes the pusher 8 to allow the skin-piercing needle 7 to puncture the patient's surface skin. Then, the pusher 8 is pulled back, and the skin-piercing seat 6 is rotated to a vertical position to prepare for the subsequent insertion of the puncture needle 32 and drainage tube 11 into the patient's body. During puncture, the medical staff presses upward on the second limiting block 17, causing the cavity on the second limiting block 17 to move upward. At this point, the second limiting block 17 no longer limits the limiting protrusion 22. The second spring 16, under compression, rebounds elastically, causing the ejector frame 15 to move rapidly toward the puncture needle 7, thereby quickly inserting the puncture needle 32 and drainage tube 11 into the patient's chest cavity. This assists the puncture unit in quickly inserting the puncture needle 32 and drainage tube 11 into the patient's chest cavity simultaneously. Then, rotate the support frame 5 to a vertical position and lift it up to remove the cover plate 4. Open the limit buckle 13, remove the entire device, then pull out the puncture needle 32 while leaving the drainage tube 11 in the patient's body and securing it. Then, connect the connecting tube 12 to a sterile water-seal bottle for collecting gas or a drainage bag for collecting effusion for collection and testing.

[0048] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0049] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A portable thoracentesis device, comprising a shell, characterized in that, It also includes an auxiliary puncture unit, which is installed inside the housing. A base is slidably connected to the bottom of the housing, and a scale is provided on the base. A first limiting block is fixedly connected to the base, and a third limiting block and a fifth limiting block are fixedly connected to the inside of the housing. The first limiting block is used to limit the auxiliary puncture unit. The auxiliary puncture unit is used to insert a drainage tube and a puncture needle into the patient's body, and the drainage tube is sleeved over the puncture needle.

2. The portable thoracentesis device according to claim 1, characterized in that, The auxiliary puncture unit includes a catapult frame slidably connected within the outer shell. The catapult frame includes a top horizontal plate slidably connected within the outer shell. A fixing groove is fixedly connected to the top of the top horizontal plate. A first limiting groove is formed on the top horizontal plate. The fixing groove and the first limiting groove protrude outside the outer shell. A catapult vertical plate is fixedly connected to the bottom of the top horizontal plate. A catapult horizontal rod is fixedly connected to the top of the catapult vertical plate. A limiting protrusion is fixedly connected to the end of the catapult horizontal rod away from the catapult vertical plate. A bottom horizontal plate is fixedly connected to the bottom of the catapult vertical plate. A second spring is sleeved on the catapult horizontal rod. The catapult vertical plate and the fifth limiting block are provided at both ends of the second spring. The catapult horizontal rod is inserted into the second limiting block. A third spring is fixedly connected to the top of the second limiting block. The end of the third spring away from the second limiting block is fixedly connected to the inner wall of the outer shell.

3. The portable thoracentesis device according to claim 2, characterized in that, A limit buckle is fixedly connected to the top of the first limiting groove.

4. The portable thoracentesis device according to claim 1, characterized in that, A reset crossbar is inserted inside the third limiting block. A first spring is sleeved on the reset crossbar. A reset seat is fixedly connected to one end of the reset crossbar. The two ends of the first spring are fixedly connected to the reset seat and the third limiting block.

5. The portable thoracentesis device according to claim 4, characterized in that, A buffer pad is inserted at the end of the reset bar away from the reset seat.

6. The portable thoracentesis device according to claim 1, characterized in that, A fourth limiting block is fixedly connected to the outer shell, and a cover plate is installed inside the fourth limiting block. A support frame and a leather breaking seat are rotatably connected to the end of the cover plate away from the fourth limiting block.

7. The portable thoracentesis device according to claim 6, characterized in that, The piercing seat is equipped with a piercing needle.

8. The portable thoracentesis device according to claim 7, characterized in that, A pusher is fixedly connected to the piercing needle.

9. The portable thoracentesis device according to claim 1, characterized in that, The outer shell is provided with a second limiting groove.

10. The portable thoracentesis device according to claim 1, characterized in that, A connecting tube is sleeved on the drainage tube.

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