Drainage puncture device for internal medicine

Abstract

The invention relates to the field of medical apparatus and instruments, and discloses a drainage puncture device for internal medicine, which comprises a puncture drainage module and a liquid storage cylinder, a liquid drainage assembly communicated with the puncture drainage module is arranged in the liquid storage cylinder, and a sliding assembly movably attached to the liquid drainage assembly is arranged in the liquid storage cylinder. A first cavity and a second cavity which are distributed up and down are formed in the liquid storage cylinder through a sliding assembly, and the liquid drainage assembly comprises a housing and a second inclined surface arranged on the housing. Through cooperation of the housing, the second inclined plane, the sliding assemblies and the like, the housing automatically ascends under the buoyancy action of the accumulated liquid, automatic switching of the accumulated liquid to the first cavity and the second cavity is achieved, the housing can be rapidly switched between the first cavity and the second cavity, the housing does not stay for a long time between the sliding assemblies, and the safety of the device is improved. The confusion phenomenon of effusion in different time periods can be effectively avoided, and the connection time of the first cavity and the second cavity can be effectively shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a drainage puncture device for internal medicine. Background Art

[0002] In clinical practice, drainage puncture devices are often used to extract large amounts of fluid from patients' bodies. After the fluid is extracted, it is analyzed to aid in disease diagnosis. Existing drainage puncture devices typically consist of a puncture needle, a drainage tube, and a drainage bag. During operation, the puncture needle is inserted into the patient's lesion, and the fluid is drawn into the drainage bag through the drainage tube.

[0003] For example, Chinese patent publication number CN117503301A discloses a puncture drainage device, which relates to the field of medical devices and includes a liquid storage cylinder, a protective auxiliary cylinder disposed at the outer end of the liquid storage cylinder, a drainage auxiliary tube connected between the liquid storage cylinder and the protective auxiliary cylinder, a puncture needle fixedly connected to the front end of the drainage auxiliary tube, a protective auxiliary mechanism disposed between the protective auxiliary cylinder and the puncture needle, and a separation auxiliary mechanism disposed inside the liquid storage cylinder, the separation auxiliary mechanism comprising a buoyancy frame and a separation auxiliary frame. The separation auxiliary mechanism is automatically driven and controlled, so that drainage effusions of different time periods are automatically separated inside the liquid storage cylinder, thereby greatly avoiding confusion between drainage effusions of different time periods, ensuring the accuracy of test results when the drainage effusions are tested, and solving the problem that the drainage effusions of different time periods are easily confused when drainage bags are used for drainage storage, which affects the accuracy of test results when the drainage effusions are tested.

[0004] This application realizes the automatic separation of the accumulated liquid inside the liquid storage cylinder by the rising of the buoyancy frame. However, the buoyancy frame is driven to rise only by the buoyancy of the accumulated liquid, so that the buoyancy frame will stay between the two partition plates for a long time, and a certain amount of accumulated liquid will accumulate between the two partition plates, which may cause the accumulated liquid at different times to be confused, and there are certain limitations to its use.

[0005] Therefore, it is necessary to provide a drainage puncture device for internal medicine to solve the above technical problems. Summary of the Invention

[0006] The object of the present invention is to provide a drainage puncture device for internal medicine to solve the problems raised in the above background technology.

[0007] To achieve the above purpose, a drainage puncture device for internal medicine is designed, which can realize the rapid switching of the cover shell between two cavities to avoid the confusion of fluid accumulation at different times.

[0008] Based on the above ideas, the present invention provides the following technical solutions: a drainage puncture device for internal medicine, comprising a puncture and drainage module and a liquid storage cylinder, wherein the liquid storage cylinder is provided with a drainage component connected to the puncture and drainage module, and the liquid storage cylinder is provided with a sliding component movably fitted with the drainage component. The interior of the liquid storage cylinder is formed with a first cavity and a second cavity distributed in an upper and lower direction by the sliding component, and the drainage component comprises a cover shell and a second inclined surface opened on the cover shell; through the second inclined surface and the sliding component, the cover shell can be quickly switched from the first cavity to the second cavity.

[0009] As a further solution of the present invention: the drainage assembly also includes a branch pipe that slides with the liquid storage cylinder, the bottom of the branch pipe is connected to the cover shell, and the top of the branch pipe is connected to a telescopic tube that is fixedly connected to the puncture and drainage module. A first inclined surface is provided on both sides of the cover shell, and the first inclined surface is arranged to intersect with the second inclined surface.

[0010] As a further solution of the present invention: the number of the second inclined surfaces is two and they are symmetrically arranged on both sides of the cover shell. The two second inclined surfaces are designed in an inverted figure eight shape as a whole, and the two first inclined surfaces are designed in an figure eight shape as a whole.

[0011] As a further solution of the present invention: the sliding assembly includes two partition plates that slide with the liquid storage cylinder, a first spring is fixedly installed between one side of the partition plate and the inner wall of the liquid storage cylinder, the other side of the partition plate is provided with a semicircular hole that movably fits with the branch pipe, and the other side of the partition plate is elastically connected to a baffle for closing the semicircular hole through a second spring; the opposite sides of the two partition plates are provided with lower inclined surfaces, and the two lower inclined surfaces are designed in an eight-shaped shape as a whole.

[0012] As a further solution of the present invention: both inner walls of the liquid storage cylinder are provided with sliding grooves for the partition plates to slide, and the first spring is placed in the sliding groove, so that the two partition plates tend to approach each other through the first spring.

[0013] As a further solution of the present invention: when the two partition plates are relatively far away from each other, the baffle can slide along the partition plates through the second spring, form a relative protrusion based on the partition plates, and contact the second inclined surface of the cover shell.

[0014] As a further solution of the present invention: when the intersection of the first inclined surface and the second inclined surface corresponds to and contacts the bottom surface of the baffle, the bottom surface of the cover shell is lower than the bottom surface of the partition plate; when the intersection of the first inclined surface and the second inclined surface is located above the top surface of the baffle, the two baffles approach each other through the second spring, which can push the cover shell to make it rise.

[0015] As a further solution of the present invention: the inner bottom wall of the liquid storage cylinder and the relatively close side of the two partition plates are both provided with a third inclined surface, and the third inclined surface is designed in a V shape as a whole; when the second inclined surface of the cover shell moves to above the baffle, the two partition plates approach each other through the first spring, and cooperate with the third inclined surface to push the cover shell up.

[0016] As a further solution of the present invention: slopes with height differences are formed between the front and rear sides of the partition plate, between the front and rear sides of the third inclined surface, and between the front and rear sides of the bottom wall of the liquid storage cylinder; when the accumulated liquid falls into the first cavity or the second cavity, the accumulated liquid can automatically converge to one side through the third inclined surface and the slope.

[0017] As a further solution of the present invention: a liquid outlet hole for discharging accumulated liquid is provided on the surface of the liquid storage cylinder, and the liquid outlet hole corresponds to the lower side of the third inclined surface.

[0018] Compared with the prior art, the present invention has the following beneficial effects: through the coordination between the cover, the second inclined surface, the liquid storage cylinder, and the sliding assembly, the buoyancy of the accumulated liquid is utilized to automatically raise the cover, thereby achieving automatic switching of the transfer of the accumulated liquid to the first cavity and the second cavity, so that the accumulated liquid at different time periods is automatically separated within the liquid storage cylinder, facilitating subsequent corresponding tests. At the same time, the cover can be quickly switched between the first cavity and the second cavity, and the cover does not stay between the sliding assembly for a long time, so that the accumulated liquid does not accumulate on the sliding assembly, effectively avoiding the confusion of the accumulated liquid at different time periods, and effectively reducing the connection time between the first cavity and the second cavity, further ensuring the accuracy of the test results, and improving the overall practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 It is a three-dimensional diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the internal structure of the liquid storage cylinder of the present invention; Figure 3 Schematic diagram of the partition plate and baffle structure of the present invention; Figure 4 This is a schematic structural diagram of the cover, the first inclined plane, and the second inclined plane of the present invention; Figure 5 This is a schematic diagram of the cover and baffle structure of the present invention; Figure 6 Schematic diagram of the third inclined surface and liquid outlet structure of the present invention; Figure 7 for Figure 6 A magnified view of the structure at center A; Figure 8 This is a schematic diagram of the structure of the chute and the partition plate of the present invention; Figure 9 This is a schematic diagram of the structure of the partition plate and the third inclined plane of the present invention; Figure 10 for Figure 9 Enlarged view of the structure at point B in the middle.

[0020] In the figure: 1. Liquid storage cylinder; 2. Puncture drainage module; 3. Drainage assembly; 4. Sliding assembly; 5. Third inclined surface; 6. Liquid outlet; 7. Slope; 101. Slide; 102. First cavity; 103. Second cavity; 301. Branch pipe; 302. Telescopic tube; 303. Cover; 304. First inclined surface; 305. Second inclined surface; 401. Partition plate; 402. First spring; 403. Baffle; 404. Second spring; 405. Lower inclined surface; 406. Semicircular hole; 407. Guide edge. DETAILED DESCRIPTION Example

[0021] See also Figures 1 to 5 An embodiment of the present invention provides a drainage puncture device for internal medicine, which is mainly used to realize rapid switching of the cover 303 between the first cavity 102 and the second cavity 103. The device includes a puncture and drainage module 2, a drainage component 3 connected to the puncture and drainage module 2, and a liquid storage cylinder 1 for receiving the accumulated fluid. The puncture and drainage module 2 can be inserted into the patient's lesion and connected to the drainage component 3 for draining the accumulated fluid. It is an existing mature technology and will not be described in detail here; and the drainage component 3 is inserted into the liquid storage cylinder 1 to transport the accumulated fluid discharged by the puncture and drainage module 2 to the liquid storage cylinder 1.

[0022] Furthermore, the interior of the liquid reservoir 1 is provided with a sliding assembly 4 that movably engages with the liquid discharge assembly 3. The sliding assembly 4 forms a first cavity 102 and a second cavity 103 within the liquid reservoir 1, with the first cavity 102 located below the second cavity 103. The liquid discharge assembly 3 includes a housing 303 and a second inclined surface 305 formed on the housing 303. When the housing 303 rises within the liquid reservoir 1 due to buoyancy, the second inclined surface 305 and the sliding assembly 4 allow the housing 303 to quickly move from the first cavity 102 to the second cavity 103, thereby reducing the circulation time between the first cavity 102 and the second cavity 103.

[0023] Reference Figure 2 and Figure 4In this embodiment, preferably, the drainage assembly 3 further includes a branch tube 301 that slides vertically with the liquid reservoir 1. The bottom of the branch tube 301 is connected to the cover 303, and the top of the branch tube 301 is connected to a telescopic tube 302 that is fixedly connected to the puncture and drainage module 2. The accumulated fluid transported through the puncture and drainage module 2 can flow into the liquid reservoir 1 through the telescopic tube 302, the branch tube 301, and the cover 303. When the amount of accumulated fluid in the liquid reservoir 1 increases, the cover 303 will rise within the liquid reservoir 1. Due to the up and down sliding of the branch tube 301 and the liquid reservoir 1, the cover 303 can form a vertical rise along the liquid reservoir 1.

[0024] In the above structure, the second inclined surfaces 305 are symmetrically arranged on both sides of the cover 303, and the overall shape is inverted. When the cover 303 rises vertically, the sliding assembly 4 first opens and then automatically closes. When the sliding assembly 4 contacts the second inclined surfaces 305, the cover 303 is accelerated upward, causing it to move quickly from the first cavity 102 to the second cavity 103, and the sliding assembly 4 can also quickly and automatically close.

[0025] Furthermore, first inclined surfaces 304 may be provided on both sides of the housing 303. In this case, the two first inclined surfaces 304 are arranged in an overall figure-eight shape, and the first inclined surfaces 304 and the second inclined surfaces 305 are intersecting. This allows the housing 303 to first contact the first inclined surfaces 304 and then the second inclined surfaces 305 when it is raised. The first inclined surfaces 304 delay the contact time between the housing 303 and the sliding assembly 4, allowing more fluid to be collected in the first cavity 102 without affecting the movement of the sliding assembly 4.

[0026] Reference Figures 2 to 5 In this embodiment, preferably, the sliding assembly 4 includes two partition plates 401 that slide with the liquid storage cylinder 1. Correspondingly, the inner walls of both sides of the liquid storage cylinder 1 are provided with sliding grooves 101 to allow the partition plates 401 to slide left and right. A first spring 402 is fixedly installed between one side of the partition plate 401 and the inner wall of the liquid storage cylinder 1. Under the action of the first spring 402, the two partition plates 401 tend to approach each other. A semicircular hole 406 is provided on the other side of the partition plate 401, which is movably fitted with the branch pipe 301. The fit of the two partition plates 401 allows the semicircular holes 406 to form a circular hole, which can be used for the placement and up and down sliding of the branch pipe 301.

[0027] A baffle 403 for closing a semicircular hole 406 is elastically connected to the other side of the partition plate 401 via a second spring 404. When the branch pipe 301 is separated from the partition plate 401, the baffle 403 is moved toward the other partition plate 401 under the action of the second spring 404, thereby causing the two baffles 403 to abut against each other and block the semicircular hole 406. After the two partition plates 401 are separated, the baffles 403 can continue to approach each other and protrude from the corresponding partition plate 401, although the protrusion distance is relatively short.

[0028] Among them, the two partition plates 401 are each provided with a lower inclined surface 405 on the opposite side, and the two lower inclined surfaces 405 are designed in an eight-shaped shape as a whole. When the cover shell 303 rises and contacts the lower inclined surface 405, it can push the two partition plates 401 to separate to both sides and squeeze the first spring 402. At this time, even if the two baffles 403 are close to each other, they will separate to both sides again under the action of the first inclined surface 304.

[0029] Further, such as Figure 5 As shown, when the intersection of the first inclined surface 304 and the second inclined surface 305 contacts the bottom surface of the baffle 403, the bottom surface of the housing 303 is lower than the bottom surface of the partition plate 401. At this time, the accumulated liquid in the housing 303 can still be transported into the first cavity 102. When the intersection of the first inclined surface 304 and the second inclined surface 305 is above the top surface of the baffle 403, the two baffles 403 move closer to each other under the action of the second spring 404, and the second inclined surface 305 can push the housing 303 to rise quickly, shortening the time the housing 303 stays between the two partition plates 401.

[0030] In the above structure, when the intersection of the first inclined surface 304 and the second inclined surface 305 contacts the top surface of the baffle 403, the bottom surface of the cover shell 303 is preferably lower than the bottom surface of the partition plate 401, or flush with the bottom surface of the partition plate 401. At this time, the accumulated liquid in the cover shell 303 can still be transported into the first cavity 102; and after moving to above the top surface of the baffle 403, the cover shell 303 can quickly rise and separate from between the two partition plates 401, which can effectively reduce the possibility of accumulated liquid accumulating between the two partition plates 401.

[0031] During use, the puncture and drainage module 2 is inserted into the patient's lesion, and the accumulated fluid is transported into the first cavity 102 via the telescopic tube 302, the branch tube 301, and the cover 303. As the amount of fluid accumulated in the first cavity 102 increases, the cover 303, under the action of buoyancy, can rise vertically along the liquid storage cylinder 1. When the first inclined surface 304 contacts the lower inclined surface 405, it pushes the two partitions 401 apart until the intersection of the first inclined surface 304 and the second inclined surface 305 moves above the baffle 403. During this process, the cover 303 continues to transport the accumulated fluid into the first cavity 102, and the accumulated fluid does not come into contact with the partition 401. Then, the two baffles 403 are moved closer to each other by the second spring 404, and the second inclined surface 305 pushes the cover 303 to rise rapidly, passing between the two partitions 401. When the cover 303 rises to above the partition plate 401, the cover 303 is transferred from the first cavity 102 to the second cavity 103. The first spring 402 causes the two partition plates 401 to close together, and the second spring 404 causes the two baffles 403 to close together. At this time, the accumulated liquid in the cover 303 is transferred to the second cavity 103.

[0032] In summary, through the coordination of the housing 303, the second inclined surface 305, the baffle 403, and the partition 401, the housing 303 is automatically raised by utilizing the buoyancy of the accumulated fluid, thereby automatically switching the delivery of the accumulated fluid to the first cavity 102 and the second cavity 103. This automatically separates the accumulated fluid at different time periods within the liquid storage cylinder 1, facilitating subsequent corresponding tests. At the same time, the switching of the housing 303 between the first cavity 102 and the second cavity 103 can be achieved quickly. The housing 303 does not stay between the two partitions 401 for a long time, and the accumulated fluid does not accumulate between the two partitions 401. This effectively avoids the confusion of the accumulated fluid at different time periods, and effectively reduces the connection time between the first cavity 102 and the second cavity 103, further ensuring the accuracy of the test results, and improving the overall practicality. Example

[0033] See also Figures 1 to 8 On the basis of the first embodiment, considering the drainage requirements in the first cavity 102 and the second cavity 103, and the lowering and resetting requirements of the cover 303 from the second cavity 103 to the first cavity 102, the partition plate 401 and the inner bottom wall of the liquid storage cylinder 1 are improved.

[0034] At this time, a third inclined surface 5 is provided on the relatively close side of the two partition plates 401 and the inner bottom wall of the liquid storage cylinder 1, and the third inclined surface 5 is in a V-shape as a whole; when the second inclined surface 305 of the cover shell 303 moves to the top of the baffle 403, the first spring 402 can make the partition plates 401 move closer to each other, and at this time the third inclined surface 5 can further accelerate the rise of the cover shell 303.

[0035] In the above structure, the front side of the partition plate 401 and the front side of the inner bottom wall of the liquid storage cylinder 1 can be higher than their rear sides, that is, forming a slope 7 with a certain height difference. This allows the accumulated liquid to automatically converge toward the rear side after falling into the first cavity 102 or the second cavity 103. Correspondingly, after the slope 7 is provided, the third inclined surface 5 is also adapted to correspond, that is, the two sides of the third inclined surface 5 also have a height difference. Of course, in actual use, the front side can also be set lower than the rear side, in which case the accumulated liquid will automatically converge toward the front side.

[0036] Furthermore, the design adapted to the above-mentioned slope 7 can correspond to the opening of a liquid outlet 6 on the liquid storage cylinder 1, and the liquid outlet 6 corresponds to the third slope 5 on the partition plate 401 and the third slope 5 on the liquid storage cylinder 1 respectively. When the accumulated liquid is converged due to the third slope 5 and the slope 7, it can be automatically discharged through the liquid outlet 6.

[0037] In this embodiment, Figure 8As shown, due to the setting of the slope 7 on the partition plate 401, the slide groove 101 can also be adjusted accordingly to form a state with a height difference on both sides. At this time, the partition plate 401 can still slide left and right based on the slide groove 101 without interference.

[0038] During use, the housing 303, the second inclined surface 305, and the partition plate 401 structures can realize automatic switching of the transport of the accumulated liquid to the first cavity 102 and the second cavity 103, and the switching can be achieved quickly. The working process and effect of this part are the same as those in Example 1 and will not be repeated here. The difference is that when the second inclined surface 305 of the housing 303 moves above the baffle 403, the second spring 404 brings the baffle 403 closer to each other. The contact between the baffle 403 and the second inclined surface 305 accelerates the rise of the housing 303. At the same time, the first spring 402 can bring the partition plate 401 closer to each other. The contact between the second inclined surface 305 and the third inclined surface 5 further accelerates the rise of the housing 303. When the housing 303 transports the accumulated liquid in the first cavity 102 or the second cavity 103, the accumulated liquid can automatically converge to the lower side due to the action of the slope 7, and can be quickly discharged through the liquid outlet 6 at a later stage through the third inclined surface 5.

[0039] After the accumulated fluid is drained, the housing 303 needs to be lowered from the second cavity 103 into the first cavity 102 to reset. At this time, the portion of the branch pipe 301 exposed from the liquid storage cylinder 1 can be pushed to drive the housing 303 downward. The third inclined surface 5 and the second inclined surface 305 can automatically separate the two partitions 401. At this time, the two baffles 403 can continue to move closer to each other and protrude from the partition 401. However, the second inclined surface 305 can cause the baffles 403 to retract into the partition 401, which will not affect the continued descent of the housing 303. When the intersection of the first inclined surface 304 and the second inclined surface 305 passes over the bottom surface of the baffle 403, the baffle 403 can protrude from the partition 401 and contact the first inclined surface 304. The cooperation between the two can accelerate the descent of the housing 303, allowing the housing 303 to quickly pass between the two partitions 401 and enter the first cavity 102.

[0040] Compared to the first embodiment, the coordination of the partition plate 401, the baffle 403, the third inclined surface 5, and the first inclined surface 304 allows the accumulated liquid to converge toward the front and rear sides, facilitating subsequent discharge from the liquid outlet 6. Furthermore, the coordination of the third inclined surface 5 with the second inclined surface 305 facilitates the descent and reset of the housing 303 into the first cavity 102, while the coordination of the first inclined surface 304 and the baffle 403 accelerates the descent of the housing 303 into the first cavity 102, thereby achieving multifunctionality for the first inclined surface 304, the second inclined surface 305, and the third inclined surface 5. The overall solution, combined with the arrangement of the partition plate 401 and the liquid storage cylinder 1, eliminates the need for an openable door panel for the liquid storage cylinder 1 or the need to manually move the two partition plates 401 to provide space. The housing 303 can be lowered and reset simply by pressing down the branch pipe 301, thus providing greater applicability. Example

[0041] See also Figures 1 to 10 On the basis of the second embodiment, considering that the semicircular hole 406 is opened, even with the auxiliary drainage of the third inclined surface 5, some accumulated fluid still remains in the semicircular hole 406, and the accumulated fluid cannot be effectively discharged from the liquid outlet 6, which has certain limitations in use.

[0042] To this end, the semicircular hole 406 is improved: guide edges 407 are provided on both the front and rear sides of the semicircular hole 406. The guide edges 407 allow the accumulated liquid in the semicircular hole 406 to flow out of the semicircular hole 406 via the third inclined surface 5 and the guide edges 407. In this embodiment, the baffle 403 can also be adapted to correspond to the slope 7 to facilitate the discharge of the accumulated liquid from the semicircular hole 406.

[0043] During use, the housing 303, the second inclined surface 305, and the partition plate 401 can realize automatic switching of the transport of the accumulated liquid to the first cavity 102 and the second cavity 103, and the switching can be realized quickly. The partition plate 401, the baffle 403, and the third inclined surface 5 can realize the convergence of the accumulated liquid and facilitate its discharge, and facilitate the lowering and reset of the housing 303 into the first cavity 102. The working process and effect of this part are the same as those in the second embodiment and will not be repeated here. The difference is that when part of the accumulated liquid is in the semicircular hole 406, the cooperation of the third inclined surface 5 and the guide edge 407 allows the accumulated liquid to flow out of the semicircular hole 406 and finally be discharged from the liquid outlet 6.

[0044] Compared to the second embodiment, the coordination of the semicircular hole 406, baffle 403, slope 7, and third inclined surface 5 prevents the accumulation of liquid within the semicircular hole 406, effectively draining the accumulated liquid from the liquid outlet 6. This also prevents some of the accumulated liquid from falling into the first cavity 102 after the cover 303 is subsequently lowered, thereby ensuring the long-term use of the liquid storage cartridge 1. The overall solution, combined with the provision of the semicircular hole 406, combined with the guidance of the third inclined surface 5 and slope 7, further facilitates the drainage of accumulated liquid, meeting more practical requirements.

Claims

1. A drainage puncture device for internal medicine, comprising a puncture drainage module and a liquid storage cylinder, characterized in that: The liquid storage cylinder is provided with a drainage assembly connected to the puncture and drainage module, and a sliding assembly that is movably fitted with the drainage assembly is provided in the liquid storage cylinder. The interior of the liquid storage cylinder is formed with a first cavity and a second cavity distributed up and down by the sliding assembly. The drainage assembly includes a cover shell and a second inclined surface opened on the cover shell; through the second inclined surface and the sliding assembly, the cover shell can be quickly switched from the first cavity to the second cavity.

2. The internal medicine drainage puncture device according to claim 1, characterized in that: The drainage assembly also includes a branch pipe that slides with the liquid storage cylinder. The bottom of the branch pipe is connected to the cover shell, and the top of the branch pipe is connected to a telescopic tube that is fixedly connected to the puncture and drainage module. A first inclined surface is provided on both sides of the cover shell, and the first inclined surface is arranged to intersect with the second inclined surface.

3. The internal medicine drainage puncture device according to claim 2, characterized in that: There are two second inclined surfaces, which are symmetrically arranged on both sides of the housing. The two second inclined surfaces are designed in an inverted figure eight shape as a whole, and the two first inclined surfaces are designed in an figure eight shape as a whole.

4. The internal medicine drainage puncture device according to claim 2, characterized in that: The sliding assembly includes two partition plates that slide with the liquid storage cylinder, a first spring is fixedly installed between one side of the partition plate and the inner wall of the liquid storage cylinder, a semicircular hole is opened on the other side of the partition plate and movably fits with the branch pipe, and a baffle for closing the semicircular hole is elastically connected to the other side of the partition plate through a second spring; lower inclined surfaces are opened on the opposite sides of the two partition plates, and the two lower inclined surfaces are designed in an eight-shaped shape as a whole.

5. The internal medicine drainage puncture device according to claim 4, characterized in that: Both inner walls of the liquid storage cylinder are provided with sliding grooves for the partition plates to slide, and the first spring is arranged in the sliding groove, so that the two partition plates tend to approach each other through the first spring.

6. The internal medicine drainage puncture device according to claim 4, characterized in that: When the two partition plates are relatively separated, the baffle can slide along the partition plates through the second spring, form a relative protrusion based on the partition plates, and contact the second inclined surface of the cover shell.

7. The internal medicine drainage puncture device according to claim 6, characterized in that: When the intersection of the first and second inclined surfaces contacts the bottom surface of the baffle, the bottom surface of the cover shell is lower than the bottom surface of the partition plate; when the intersection of the first and second inclined surfaces is above the top surface of the baffle, the two baffles approach each other through the second spring, which can push the cover shell to rise.

8. The internal medicine drainage puncture device according to any one of claims 4 to 7, characterized in that: The inner bottom wall of the liquid storage cylinder and the relatively close side of the two partition plates are both provided with a third inclined surface, and the third inclined surface is designed in a V shape as a whole; when the second inclined surface of the cover shell moves to above the baffle, the two partition plates approach each other through the first spring, and cooperate with the third inclined surface to push the cover shell up.

9. The internal medicine drainage puncture device according to claim 8, characterized in that: Slopes with height differences are formed between the front and rear sides of the partition plate, between the front and rear sides of the third inclined surface, and between the front and rear sides of the bottom wall of the liquid storage cylinder; when the accumulated liquid falls into the first cavity or the second cavity, the accumulated liquid can automatically converge to one side through the third inclined surface and the slope.

10. The internal medicine drainage puncture device according to claim 9, characterized in that: A liquid outlet hole for discharging accumulated liquid is provided on the surface of the liquid storage cylinder, and the liquid outlet hole corresponds to a lower side of the third inclined surface.

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