Ventricular drainage device

Abstract

The invention belongs to the technical field of medical instruments, and provides a ventricular drainage device which comprises a totally-closed first drainage pipeline, a buffer bottle is arranged at one end of the first drainage pipeline, the first drainage pipeline is inserted into the buffer bottle in a sealed mode, and a second drainage pipeline is arranged at the position, on one side of the first drainage pipeline, of the bottle bottom of the buffer bottle. A drainage bag is arranged at the other end of the drainage pipeline II; the device further comprises a hollow sterile sampling cavity, the sterile sampling cavity is connected to the outer wall of the buffer bottle in a sealed mode and communicated with the buffer bottle, a fixedly-connected self-sealing silica gel layer is arranged at the position, close to the end, of the interior of the sterile sampling cavity, a containing frame is arranged on one side of the buffer bottle, and the buffer bottle and the drainage bag are installed on the containing frame. According to the cerebrospinal fluid sampling device, the buffer bottle is arranged, the sterile sampling cavity is formed in the buffer bottle, and the self-sealing silica gel layer is arranged in the sterile sampling cavity, so that closed sampling is realized when cerebrospinal fluid is sampled, and compared with a traditional mode, the infection rate is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, in particular to a ventricular drainage device. BACKGROUND

[0002] Ventricular drainage is an important treatment method in neurosurgery, mainly used to reduce intracranial pressure, drain blood or infectious cerebrospinal fluid in the ventricle, thereby relieving the condition. Ventricular drainage is suitable for intracranial pressure increase: such as intracranial pressure increase caused by cerebral hemorrhage, brain trauma, brain tumor, etc. Hydrocephalus: ventricle enlargement caused by cerebrospinal fluid circulation disorder. Intraventricular hemorrhage: such as intraventricular hemorrhage, which needs to be drained to reduce the compression on the brain tissue, etc.

[0003] During the ventricular drainage process, positioning and anesthesia will be performed first: the position of the ventricle is determined through imaging examination (such as CT or MRI), the patient usually takes a supine position, and local anesthesia or general anesthesia is performed. Skull drilling: a small hole is drilled on the forehead or top to avoid damaging the brain tissue. Insertion of drainage tube: the drainage tube is inserted into the ventricle, the other end is led to the outside of the body through the skin, and is connected to a sterile drainage bag. Fixation and adjustment: the drainage tube is fixed to the scalp, and the height of the drainage bag is adjusted according to the intracranial pressure.

[0004] The traditional drainage device is usually composed of an intracranial catheter, a drainage tube, a storage bag and a simple adjustment rack, and relies on the principle of gravity drainage to control the drainage pressure by manually adjusting the height of the storage bag. During the long-term drainage of the patient, the open three-way valve design and frequent manual sampling operation can easily lead to contamination of the cerebrospinal fluid, and microbial colonization at the catheter interface can cause fatal ventriculitis. SUMMARY

[0005] In order to solve the above technical problems, the present application provides a ventricular drainage device to solve the problem of infection risk in the process of draining the ventricle of the patient in the prior art.

[0006] A ventricular drainage device, comprising a fully closed drainage pipeline I, one end of the drainage pipeline I is provided with a buffer bottle, the drainage pipeline I is sealed and inserted into the inside of the buffer bottle, the bottom of the buffer bottle and one side of the drainage pipeline I are provided with a drainage pipeline II, the other end of the drainage pipeline II is provided with a drainage bag;

[0007] It also comprises a sterile sampling cavity with an internal cavity, which is sealed and connected to the outer wall of the buffer bottle and communicates with the buffer bottle, a self-sealing silica gel layer is fixedly connected to the inside of the sterile sampling cavity close to the end portion, one side of the buffer bottle is provided with a placing rack, and the buffer bottle and the drainage bag are installed on the placing rack.

[0008] Preferably, a bending portion is provided at one end of the drainage line 1 entering the interior of the buffer bottle, and the outlet of the bending portion faces the bottom of the buffer bottle. Memory alloy wire meshes are formed on the outer walls of the drainage line 1 and the drainage line 2, and the memory alloy wire meshes are distributed at intervals in the drainage line 1 and the drainage line 2.

[0009] Preferably, a fixedly connected limiting ring is provided on the drainage pipeline 1 and at one end away from the buffer bottle, a gas supply pipeline is provided on the outer wall of the limiting ring, the gas supply pipeline passes through the limiting ring and is communicated with the drainage pipeline 1, the other end of the gas supply pipeline is connected to a micro air pump, a limiting plate fixedly connected to the drainage pipeline 1 is provided below the limiting ring, and a clamping assembly is provided on the drainage pipeline 1 between the gas supply pipeline, the limiting ring and the limiting plate.

[0010] Preferably, the clamping assembly includes a sliding frame, a sealing plate and a magnetic part. The sliding frame is slidably mounted on the gas supply pipeline and the drainage pipeline. The top plate and the bottom plate of the sliding frame are provided with a penetrating accommodating hole. The vertical cross-sectional profile of the sealing plate is an "I" shape. The sealing plate extends out of the accommodating hole and is movably clamped on the sliding frame. The sealing plates are symmetrically located on both sides of the gas supply pipeline and the drainage pipeline. The magnetic part is symmetrically installed on the opposite surfaces of the two sealing plates.

[0011] Preferably, an air outlet ring is provided on the top of the buffer bottle, a sealed plug is provided inside the air outlet ring, and mounting rings are symmetrically provided on the outer wall of the buffer bottle and below the sterile sampling cavity. The two mounting rings are spaced apart up and down, and a movable connecting clip 1 and clip 2 are provided between the two mounting rings. The cross-sectional profiles of clip 1 and clip 2 are semicircular, and one end of clip 1 and clip 2 is provided with a movable pin for rotational connection, and the other end of clip 1 and clip 2 is provided with mutually locking positioning screws, and a lap plate is provided on the outer ring wall of clip 2, and a matching hole is provided on the lap plate.

[0012] Preferably, the placement rack consists of a main rod body, a lifting rod body and a threaded rod body, the threaded rod body is fixedly connected to the top of the lifting rod body, the lifting rod body is provided with a load ring, the matching hole on the lap plate is sleeved on the lifting rod, and the threaded rod body is rotatably connected to the top of the main rod body and matched with its thread.

[0013] Preferably, a stabilizing suction cup is provided at the bottom of the main rod body, and a ring-shaped supporting leg is provided on the outer wall of the main rod body. The supporting leg is tilted downward and is rotatably connected to the main rod body. A pressure sensor and a displacement sensor are provided on the outer wall of the buffer bottle, and the probe of the displacement sensor is vertically downward.

[0014] Preferably, the lap plate is provided with a sliding block away from the second side of the clamping piece, the sliding block is provided with an auxiliary plate away from the side of the lap plate, the vertical section profile of the auxiliary plate is "L" type, the "L" type horizontal section of the auxiliary plate is movably sleeved on the outer wall of the main rod body, the "L" type vertical section of the auxiliary plate is provided with a guide rail, and the sliding block and the guide rail are matched with each other.

[0015] Preferably, a plurality of clamping rings are arranged on the main rod body at intervals, the drainage bag is symmetrically provided with a tightening rope on one side, the tightening rope is tightly wound between two adjacent clamping rings, and a liquid outlet is arranged at the bottom of the drainage bag, and an opening and closing valve is arranged on the liquid outlet.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1、The buffer bottle is arranged, the buffer bottle bottom is connected with drainage pipeline one and drainage pipeline two respectively, one end of the drainage pipeline two is sealingly connected with the drainage bag, the drainage pipeline one is inserted into the brain, and the cerebrospinal fluid in the brain is drained out, the sealingly connected sterile sampling cavity is arranged on the outer wall of the buffer bottle, the self-sealing silica gel layer is sealingly connected to the inner front and rear ends of the sterile sampling cavity, and the two form an approximately sterile space in the sterile sampling cavity. When the syringe needs to sample the cerebrospinal fluid in the buffer bottle, the needle passes through the two layers of self-sealing silica gel layers and enters the buffer bottle, after sampling is completed, the needle is withdrawn from the self-sealing silica gel layer to automatically close, compared with the traditional mode, the closed sampling mode can effectively reduce the infection and improve the safety.

[0018] 2、The buffer bottle is arranged, the buffer bottle bottom is connected with drainage pipeline one and drainage pipeline two respectively, one end of the drainage pipeline two is sealingly connected with the drainage bag, the drainage pipeline one is inserted into the brain, and the cerebrospinal fluid in the brain is drained out, the sealingly connected sterile sampling cavity is arranged on the outer wall of the buffer bottle, the self-sealing silica gel layer is sealingly connected to the inner front and rear ends of the sterile sampling cavity, and the two form an approximately sterile space in the sterile sampling cavity. When the syringe needs to sample the cerebrospinal fluid in the buffer bottle, the needle passes through the two layers of self-sealing silica gel layers and enters the buffer bottle, after sampling is completed, the needle is withdrawn from the self-sealing silica gel layer to automatically close, compared with the traditional mode, the closed sampling mode can effectively reduce the infection and improve the safety. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a component structure schematic view of the ventricular drainage device of the present application;

[0020] Figure 2 It is a component structure sectional view of the buffer bottle of the present application;

[0021] Figure 3 It is a component structure schematic view of the gas pipeline and the clamping assembly of the present application;

[0022] Figure 4 It is a component structure schematic view of the buffer bottle and the mounting ring of the present application;

[0023] Figure 5 Figure is a schematic diagram of the structure of the card one and card two components of the present application;

[0024] Figure 6 Figure is a schematic diagram of the structure of the overall placement rack and auxiliary plate components of the present application;

[0025] Figure 7 Figure is a schematic diagram of the structure of the drainage bag and tying rope components of the present application.

[0026] In the figure:

[0027] 1, drainage line one; 101, curved part; 2, buffer bottle; 3, drainage line two; 4, drainage bag; 5, sterile sampling cavity; 6, self-sealing silica gel layer; 7, placement rack; 701, main rod body; 702, lifting rod body; 703, threaded rod body; 8, limiting ring; 9, gas delivery line; 10, limiting sheet; 11, sliding frame; 12, sealing plate; 13, magnetic attraction component; 14, containing hole; 15, gas outlet ring; 16, plug; 17, mounting ring; 18, card one; 19, card two; 20, movable pin; 21, positioning screw; 22, lap joint plate; 23, matching hole; 24, bearing ring; 25, stable suction disc; 26, supporting leg; 27, pressure sensor; 28, displacement sensor; 29, sliding block; 30, auxiliary plate; 31, guide rail; 32, clasp; 33, tying rope; 34, liquid outlet; 35, on-off valve. DETAILED DESCRIPTION

[0028] The embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0029] As shown in the accompanying Figure 1 to the accompanying Figure 7 as shown:

[0030] Example one: the present application provides a ventricular drainage device, including a fully enclosed drainage line one 1, one end of the drainage line one 1 is provided with a buffer bottle 2, the drainage line one 1 is sealed into the buffer bottle 2, the bottom of the buffer bottle 2 and on one side of the drainage line one 1 is provided with a drainage line two 3, the other end of the drainage line two 3 is provided with a drainage bag 4;

[0031] It also includes an internal hollow sterile sampling cavity 5, the sterile sampling cavity 5 is sealed and connected on the outer wall of the buffer bottle 2 and communicates with the buffer bottle 2, the internal hollow sterile sampling cavity 5 is provided with a fixedly connected self-sealing silica gel layer 6 near the end, one side of the buffer bottle 2 is provided with a placement rack 7, the buffer bottle 2 and the drainage bag 4 are installed on the placement rack 7.

[0032] It should be noted that by setting the buffer bottle 2, the buffer bottle 2 bottom is connected with the drainage pipeline one 1 and the drainage pipeline two 3 respectively, one end of the drainage pipeline two 3 is sealedly connected with the drainage bag 4, the drainage pipeline one 1 is inserted into the brain, and the cerebrospinal fluid in the brain is drained out, a sterile sampling cavity 5 is arranged on the outer wall of the buffer bottle 2 and is sealedly connected, a self-sealing silica gel layer 6 is sealedly connected inside the sterile sampling cavity 5, and an approximately sterile space is formed inside the sterile sampling cavity 5, when the syringe needs to sample the cerebrospinal fluid in the buffer bottle 2, the needle passes through the two layers of self-sealing silica gel layer 6 and enters the buffer bottle 2, after sampling is completed, the needle is withdrawn from the self-sealing silica gel layer 6 and is automatically closed, compared with the traditional way, the closed sampling mode can effectively reduce the infection and improve the safety.

[0033] In the embodiment, the end of the drainage pipeline one 1 entering the buffer bottle 2 is provided with a bending part 101, the outlet of the bending part 101 faces the bottom of the buffer bottle 2, and the memory alloy wire mesh is formed on the outer walls of the drainage pipeline one 1 and the drainage pipeline two 3, and the memory alloy wire mesh is spacedly distributed on the drainage pipeline one 1 and the drainage pipeline two 3.

[0034] It should be noted that by setting the bending part 101 at the outlet of the drainage pipeline one 1, when the bottom of the cerebrospinal fluid buffer bottle 2 enters, it will finally also drop to the inner bottom end of the buffer bottle 2, and in the process of cerebrospinal fluid dropping, the medical staff can observe the outflow speed of the cerebrospinal fluid, so as to avoid the situation that the outflow speed is too fast or too slow;

[0035] Moreover, the memory alloy wire mesh is arranged on the outer walls of the drainage pipeline one 1 and the drainage pipeline two 3 in a spaced distribution, the memory alloy wire mesh can improve the resilience of the drainage pipeline one 1 and the drainage pipeline two 3, so that the drainage pipeline one 1 and the drainage pipeline two 3 automatically rebound after being pressed, thereby avoiding the situation that the drainage pipeline one 1 and the drainage pipeline two 3 are folded and twisted, and affecting the circulation of the cerebrospinal fluid.

[0036] In the embodiment, the limiting ring 8 is fixedly connected on the drainage pipeline one 1 and away from the buffer bottle 2, the outer wall of the limiting ring 8 is provided with a gas conveying pipeline 9, the gas conveying pipeline 9 penetrates through the limiting ring 8 and communicates with the drainage pipeline one 1, the other end of the gas conveying pipeline 9 is connected with a micro gas pump, the limiting sheet 10 is fixedly connected on the drainage pipeline one 1 below the limiting ring 8, and the clamping assembly is arranged on the drainage pipeline one 1 between the gas conveying pipeline 9, the limiting ring 8 and the limiting sheet 10.

[0037] It should be noted that, through the set air supply line 9, the air supply line 9 and the drainage line 1 are interconnected, and the other end of the air supply line 9 is interconnected with the micro air pump. When the cerebrospinal fluid comes out and encounters blood clots or other impurities blocking the drainage line 1, the drainage line is clamped by the clamping component, the clamping component on the air supply line 9 is opened, and the micro air pump is started. The gas will enter the drainage line 1 through the air supply line 9 and move toward the buffer bottle 2 to prevent the gas from entering the brain. The impurities in the drainage line 1 are sent into the buffer bottle 2 through the action of air pressure, and the impurities in the drainage line 1 are cleared.

[0038] In this embodiment, the clamping assembly includes a sliding frame 11, a sealing plate 12 and a magnetic member 13. The sliding frame 11 is slidably mounted on the gas pipeline 9 and the drainage pipeline 1. The top plate and the bottom plate of the sliding frame 11 are provided with a penetrating accommodating hole 14. The vertical cross-sectional profile of the sealing plate 12 is an "I" shape. The sealing plate 12 extends out of the accommodating hole 14 and is movably clamped on the sliding frame 11. The sealing plates 12 are symmetrically located on both sides of the gas pipeline 9 and the drainage pipeline 1. The magnetic member 13 is symmetrically installed on the opposite surfaces of the two sealing plates 12.

[0039] It should be noted that, through the provided clamping assembly, the sliding frame 11 is movably connected to the drainage pipeline 1 and the gas pipeline 9. There are two sealing plates 12, which are located on both sides of the drainage pipeline 1 and the gas pipeline 9. The sealing plates 12 are slidably connected inside the sliding frame 11. When it is necessary to seal the drainage pipeline 1 or the gas pipeline 9, the two sealing plates 12 are pushed close to each other at the same time, and the drainage pipeline 1 or the gas pipeline 9 is squeezed. When the extrusion is completely sealed, the magnetic suction parts 13 on the opposite surfaces of the sealing plates 12 are adsorbed together, so that the two sealing plates 12 are tightly adsorbed together.

[0040] In this embodiment, an air outlet ring 15 is provided on the top of the buffer bottle 2, and a sealed plug 16 is provided inside the air outlet ring 15. A mounting ring 17 is symmetrically provided on the outer wall of the buffer bottle 2 and below the sterile sampling chamber 5. The two mounting rings 17 are spaced apart up and down, and a movable connecting clip 18 and a clip 2 19 are provided between the two mounting rings 17. The cross-sectional profiles of the clip 1 18 and the clip 2 19 are semicircular. One end of the clip 18 and the clip 2 19 is provided with a movable pin 20 for rotational connection, and the other end of the clip 18 and the clip 2 19 is provided with a mutually locking positioning screw 21. A lap plate 22 is provided on the outer ring wall of the clip 2 19, and a matching hole 23 is provided on the lap plate 22.

[0041] It should be noted that the gas outlet ring 15 is arranged at the top of the buffer bottle 2. During the cleaning process of the impurities in the drainage pipeline 1, gas will also enter the buffer bottle 2. The gas entering the buffer bottle 2 can be discharged through the arranged gas outlet ring 15, so as to avoid the case that the pressure is too high due to the increase of the gas in the buffer bottle 2.

[0042] The mounting ring 17 is fixedly connected to the outer wall of the buffer bottle 2. The clamping piece one 18 and the clamping piece two 19 are arranged between the two mounting rings 17. One end of the clamping piece one 18 and the clamping piece two 19 is connected through the movable pin 20, and the other end is connected through the positioning screw 21. When the clamping piece one 18 and the clamping piece two 19 are clamped with each other, the buffer bottle 2 can be fixed. The side of the clamping piece two 19 is provided with the lap plate 22. The buffer bottle 2 is installed on the placing rack 7 through the lap plate 22, so as to fix the buffer bottle 2. In the later period, the buffer bottle 2 can be easily disassembled.

[0043] In the embodiment, the placing rack 7 is composed of a main rod body 701, a lifting rod body 702 and a threaded rod body 703. The threaded rod body 703 is fixedly connected to the top of the lifting rod body 702. The lifting rod body 702 is provided with a bearing ring 24. The matching hole 23 on the lap plate 22 is sleeved on the lifting rod. The threaded rod body 703 is rotationally connected to the top of the main rod body 701 and is screwed with the main rod body 701.

[0044] It should be noted that the main rod body 701 is arranged. The threaded rod body 703 is fixed to the bottom of the lifting rod body 702. The other end of the threaded rod body 703 is rotationally connected to the main rod body 701. The bearing ring 24 is arranged on the lifting rod body 702. When the lap plate 22 is sleeved on the lifting rod body 702, the bottom of the lap plate 22 will be in contact with the bearing ring 24, so as to avoid the lap plate 22 from sliding off the lifting rod body 702. The lap plate 22 is supported. By rotating the lifting rod body 702, the main rod body 701 is fixed to the ground. The height of the lifting rod body 702 can be controlled. Finally, the height of the buffer bottle 2 can be adjusted. Different pressure values in the buffer bottle 2 are adjusted, so that the cerebrospinal fluid can enter the buffer bottle 2 better.

[0045] It should be further explained that the pressure (P bottle) in the intermediate buffer bottle 2 is determined by the liquid level height (h) in the bottle and the density (ρ) of the cerebrospinal fluid. The formula is:

[0046] P bottle = ρ·g·h.

[0047] ρ: the density of cerebrospinal fluid (approximately 1.007 g / cm 3 , close to water).

[0048] g: acceleration of gravity (9.8 m / s 2 ).

[0049] h: height difference of liquid level in bottle relative to ventricle.

[0050] Direct influence of height regulation:

[0051] Lifting buffer bottle 2: the liquid level in the bottle rises, h increases, P bottle rises, drainage resistance increases, and the outflow speed of cerebrospinal fluid slows down.

[0052] Lowering buffer bottle 2: the liquid level in the bottle drops, h decreases, P bottle drops, drainage resistance decreases, and the outflow speed of cerebrospinal fluid increases.

[0053] In this embodiment, the bottom of the main rod body 701 is provided with a stable suction cup 25, and the outer wall of the main rod body 701 is provided with a plurality of support legs 26 distributed in a ring shape. The support legs 26 are inclined downward and are rotationally connected with the main rod body 701. The outer wall of the buffer bottle 2 is provided with a pressure sensor 27 and a displacement sensor 28, and the probe of the displacement sensor 28 is vertically downward.

[0054] It should be noted that the stable suction cup 25 can be used to fix the main rod body 701 to the ground, thereby improving the stability of the main rod body 701. The pressure sensor 27 and the displacement sensor 28 are arranged on the outer wall of the buffer bottle 2. The pressure sensor 27 can monitor the pressure value in the buffer bottle 2 in real time. When the pressure value is not appropriate, the height of the buffer bottle 2 can be adjusted. The height data can be obtained through the displacement sensor 28. In cooperation with the pressure sensor 27, the pressure in the buffer bottle 2 can be accurately controlled to ensure the normal flow rate of cerebrospinal fluid.

[0055] In this embodiment, the side of the lap plate 22 away from the second clamping piece 19 is provided with a sliding block 29, and the side of the sliding block 29 away from the lap plate 22 is provided with an auxiliary plate 30. The vertical section profile of the auxiliary plate 30 is "L" type. The "L" type horizontal section of the auxiliary plate 30 is movably sleeved on the outer wall of the main rod body 701. The "L" type vertical section of the auxiliary plate 30 is provided with a guide rail 31. The sliding block 29 cooperates with the guide rail 31.

[0056] It should be noted that the sliding block 29 is arranged on the lap plate 22, and the sliding block 29 cooperates with the guide rail 31. During the height displacement process of the buffer bottle 2, better stability can be provided.

[0057] In this embodiment, a plurality of clamping rings 32 are arranged on the main rod body 701 in a spaced manner. A tightening rope 33 is symmetrically arranged on one side of the drainage bag 4. The tightening rope 33 is tightly wound between adjacent two clamping rings 32. An opening and closing valve 35 is installed on the liquid outlet 34 at the bottom of the drainage bag 4.

[0058] It needs explanation that the clamping ring 32 is arranged on the main rod body 701, the clamping ring 32 is distributed in multiple layers, the drainage bag 4 is located below the buffer bottle 2, so that the cerebrospinal fluid in the buffer bottle 2 can enter the drainage bag 4 along the drainage pipeline 3, the fastening rope 33 is symmetrically arranged on the side wall of the drainage bag 4, the fastening rope 33 can be fastened between two clamping rings 32 at different heights, so that the fixation of the drainage bag 4 is realized, and the drainage bag 4 is convenient to disassemble, the liquid outlet 34 is arranged at the bottom, after the cerebrospinal fluid reaches a certain height, the opening and closing valve 35 can be opened to make the cerebrospinal fluid flow out from the liquid outlet 34.

[0059] The embodiments of the present application are given for example and description, although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary, and cannot be understood as the limitation of the present application, and the ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the present application.

Claims

1. A ventricular drainage device, characterized in that: include: A fully enclosed drainage line (1), wherein a buffer bottle (2) is provided at one end of the drainage line (1), the drainage line (1) is sealed and inserted into the interior of the buffer bottle (2), a drainage line (3) is provided at the bottom of the buffer bottle (2) and on one side of the drainage line (1), and a drainage bag (4) is provided at the other end of the drainage line (3); The invention also includes a sterile sampling cavity (5) with a hollow interior, wherein the sterile sampling cavity (5) is sealed and connected to the outer wall of the buffer bottle (2) and communicates with the buffer bottle (2), and a fixedly connected self-sealing silicone layer (6) is provided near the end of the interior of the sterile sampling cavity (5), and a placement rack (7) is provided on one side of the buffer bottle (2), and the buffer bottle (2) and the drainage bag (4) are installed on the placement rack (7).

2. The ventricular drainage device according to claim 1, wherein: A curved portion (101) is provided at one end of the drainage pipe (1) entering the interior of the buffer bottle (2), and an outlet of the curved portion (101) faces the bottom of the buffer bottle (2). Memory alloy wire meshes are formed on the outer walls of the drainage pipe (1) and the drainage pipe (3), and the memory alloy wire meshes are distributed at intervals on the drainage pipe (1) and the drainage pipe (3).

3. The ventricular drainage device according to claim 1, wherein: A fixedly connected limiting ring (8) is sleeved on the drainage pipeline (1) and at one end away from the buffer bottle (2); an air supply pipeline (9) is provided on the outer wall of the limiting ring (8); the air supply pipeline (9) passes through the limiting ring (8) and is communicated with the drainage pipeline (1); the other end of the air supply pipeline (9) is connected to a micro air pump; a limiting plate (10) fixedly connected to the drainage pipeline (1) is provided below the limiting ring (8); a clamping assembly is provided on the drainage pipeline (1) between the air supply pipeline (9), the limiting ring (8) and the limiting plate (10).

4. The ventricular drainage device according to claim 3, wherein: The clamping assembly includes a sliding frame (11), a sealing plate (12) and a magnetic member (13). The sliding frame (11) is slidably mounted on the gas pipeline (9) and the drainage pipeline (1). The top plate and the bottom plate of the sliding frame (11) are provided with a through-hole (14). The vertical cross-sectional profile of the sealing plate (12) is an "I" shape. The sealing plate (12) extends out of the accommodating hole (14) and is movably clamped on the sliding frame (11). The sealing plates (12) are symmetrically located on both sides of the gas pipeline (9) and the drainage pipeline (1). The magnetic member (13) is symmetrically mounted on the opposite surfaces of the two sealing plates (12).

5. The ventricular drainage device according to claim 1, wherein: The top of the buffer bottle (2) is provided with an air outlet ring (15), and a sealed plug (16) is provided inside the air outlet ring (15). A mounting ring (17) is symmetrically provided on the outer wall of the buffer bottle (2) and below the sterile sampling chamber (5). The two mounting rings (17) are spaced apart from each other. A movable connecting clamp 1 (18) and a clamp 2 (19) are provided between the two mounting rings (17). The cross-sectional profiles of the clamp 1 (18) and the clamp 2 (19) are semicircular. One end of the clamp 1 (18) and the clamp 2 (19) is provided with a movable pin (20) for rotational connection, and the other end of the clamp 1 (18) and the clamp 2 (19) is provided with a mutually locked positioning screw (21). A lap plate (22) is provided on the outer ring wall of the clamp 2 (19), and a matching hole (23) is provided on the lap plate (22).

6. The ventricular drainage device according to claim 5, wherein: The placement rack (7) is composed of a main rod body (701), a lifting rod body (702) and a threaded rod body (703). The threaded rod body (703) is fixedly connected to the top of the lifting rod body (702). The lifting rod body (702) is provided with a carrying ring (24). The matching hole (23) on the lap plate (22) is sleeved on the lifting rod. The threaded rod body (703) is rotatably connected to the top of the main rod body (701) and is threadably matched with the main rod body (701).

7. The ventricular drainage device according to claim 6, wherein: A stabilizing suction cup (25) is provided at the bottom of the main rod body (701), and supporting legs (26) distributed in a ring are provided on the outer wall of the main rod body (701). The supporting legs (26) are arranged obliquely downward and are rotatably connected to the main rod body (701). A pressure sensor (27) and a displacement sensor (28) are provided on the outer wall of the buffer bottle (2), and the probe of the displacement sensor (28) is vertically downward.

8. The ventricular drainage device according to claim 6, wherein: A sliding block (29) is provided on the side of the lap plate (22) away from the second clamp (19), and an auxiliary plate (30) is provided on the side of the sliding block (29) away from the lap plate (22). The vertical cross-sectional profile of the auxiliary plate (30) is "L"-shaped, and the "L"-shaped horizontal section of the auxiliary plate (30) is movably sleeved on the outer wall of the main rod body (701). The "L"-shaped vertical section of the auxiliary plate (30) is provided with a guide track (31), and the sliding block (29) and the guide track (31) cooperate with each other.

9. The ventricular drainage device according to claim 6, wherein: The main rod (701) is provided with multiple layers of spaced-apart clamping rings (32), one side of the drainage bag (4) is symmetrically provided with a tightening rope (33), the tightening rope (33) is tightly wound between two adjacent clamping rings (32), and the bottom of the drainage bag (4) is provided with a liquid outlet (34), and an opening and closing valve (35) is installed on the liquid outlet (34).

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