Intracranial pressure detection structure and cerebrospinal fluid drainage device

Abstract

The utility model provides an intracranial pressure detection structure and a cerebrospinal fluid drainage device. The intracranial pressure detection structure comprises a main body tube, a telescopic bag, an indicating piece, a scale marking piece and an elastic piece, wherein the main body pipe is provided with an inner cavity, a top opening and a tail opening; the telescopic bag is arranged in the main body pipe and is provided with a connecting cylinder; the indicating piece is arranged in the main body pipe and comprises a stress part and an indicating part, and the stress part abuts against the telescopic bag; the scale marking piece comprises a first part and a second part, the first part can be installed on the tail opening, and scale value lines are arranged on the outer wall of the second part. When the device is used, the device is communicated with a drainage tube firstly, cerebrospinal fluid enters the telescopic bag during drainage, the telescopic bag pushes the indicating piece to move in the second part under the action of pressure, and the tail end indicates an intracranial pressure value when the indicating piece stops moving. According to the intracranial pressure detection structure, cerebrospinal fluid enters the telescopic bag, the telescopic bag pushes the indicating piece to move, the intracranial pressure can be detected, and the disposable use cost of the telescopic bag is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and in particular to an intracranial pressure detection structure and a cerebrospinal fluid drainage device. Background Art

[0002] Cerebrospinal fluid is a colorless and transparent liquid that fills the ventricles, subarachnoid space and central canal of the spinal cord. Cerebrospinal fluid is a non-functional extracellular fluid that contains inorganic ions, glucose, a small amount of protein and a small amount of cells. The cells in the cerebrospinal fluid are mainly monocytes and lymphocytes, which function as lymph in peripheral tissues and play a role in buffering, protecting, nourishing, transporting metabolites and maintaining normal intracranial pressure for the central nervous system. When cerebrospinal fluid accumulates in the ventricles and subarachnoid space and continues to grow, intracranial pressure will increase.

[0003] In actual clinical practice, when the patient's intracranial pressure is abnormally increased due to cerebrospinal fluid overflow, the patient needs to be externally pumped to reduce the intracranial pressure to normal levels. Chinese patent document CN202981989U discloses a measuring sampler for neurology, including a puncture needle, a catheter and a pressure gauge. Its structural feature is that the rear end of the catheter is connected to a three-way valve with a control switch, and the other two ends of the three-way valve are respectively connected to a pressure gauge and a collection catheter. The other end of the collection catheter is connected to a collection bottle with a sealing cover, and the collection catheter is provided with a one-way valve, a flow control valve, and a drip bucket.

[0004] When the doctor draws cerebrospinal fluid externally using the measuring sampler for neurology disclosed in the above patent document, the intracranial pressure can be clearly displayed by the pressure gauge, and the doctor can decide the amount of cerebrospinal fluid to be drawn based on the displayed value on the pressure gauge. However, due to the limitation of the working principle of the pressure gauge, in order for the pressure gauge to display the pressure value, the cerebrospinal fluid needs to enter the pressure gauge, and the pressure of the cerebrospinal fluid pushes the displayed value on the pressure gauge. If different patients share the same pressure gauge, the cerebrospinal fluid of different patients will flow into the same pressure gauge, resulting in mutual contamination of the cerebrospinal fluid, which is not allowed in medicine. This means that the pressure gauge in the above patent document can only be used by one patient, and the pressure gauge becomes a conventional consumable, which significantly increases the cost.

[0005] Therefore, how to design a lower-cost and disposable intracranial pressure detection structure and cerebrospinal fluid drainage device is a technical problem that has not yet been solved in the prior art. Utility Model Content

[0006] Therefore, the technical problem to be solved by the utility model is to overcome the technical defect that the sampler in the prior art uses a pressure gauge to detect intracranial pressure, and the pressure gauge can only be used once, resulting in high cost, thereby providing a lower cost and disposable intracranial pressure detection structure.

[0007] The utility model also provides a cerebrospinal fluid drainage device.

[0008] To this end, the utility model provides an intracranial pressure detection structure, comprising:

[0009] The main body tube has a cylindrical hollow inner cavity, a top surface at the top end, a top opening communicating with the hollow inner cavity is formed on the top surface, and a lower end is open and has a tail opening;

[0010] The telescopic bag is arranged inside the inner cavity of the main body tube, and comprises a main body portion and a connecting cylinder connected to the main body portion, wherein the top end of the main body portion abuts against the inner wall of the top surface of the main body tube, and the connecting cylinder passes through the top opening and is suitable for connecting with the drainage tube;

[0011] An indicator, movably disposed inside the inner cavity of the main body tube, comprises a force-bearing portion and an indicator portion fixedly connected to the force-bearing portion; the top surface of the force-bearing portion abuts against the bottom surface of the telescopic bag;

[0012] The scale identification member is hollow in structure and has openings at both ends, and includes a first part and a second part, wherein the first part is detachably mounted at the tail opening, and a scale value line is provided on the outer side wall of the second part; the inner diameter of the second part is smaller than the inner diameter of the first part to form an inner boss;

[0013] An elastic member, sleeved on the indicating portion, with one end abutting against the force-bearing portion and the other end abutting against the inner boss;

[0014] The outer diameter of the force-bearing part is the same as the outer diameter of the telescopic bag, and the outer diameter of the indicating part is smaller than the inner diameter of the second part, so that the indicating part can penetrate into the second part and indicate the scale;

[0015] In the initial state, the elastic member is in an extended state, the telescopic bag is compressed into a flat state, and the position of the indicator in the second part is in the initial state, at which time the indicated pressure value is read as 0;

[0016] When draining cerebrospinal fluid, the cerebrospinal fluid enters the telescopic bag. Under the action of intracranial pressure, the telescopic bag stretches and pushes the indicator to move downward, and the elastic member is compressed and contracted. When the indicator stops moving inside the second part, the value of the scale line indicated by the tail end of the indicator is the current intracranial pressure.

[0017] As a preferred solution, an outer wall of the tail opening is provided with an external thread, an inner wall of the first part is provided with an internal thread, and the first part is connected to the outer wall of the tail opening via a threaded structure.

[0018] As a preferred solution, the telescopic bag is a cylindrical longitudinally foldable bag body.

[0019] As a preferred solution, a protective cover is formed on the top surface of the main body tube, and the top opening is provided at the position where the protective cover is connected to the top surface.

[0020] As a preferred solution, the scale value lines are marked with numbers 0-5 from top to bottom, and the unit of the scale value lines is "Kpa".

[0021] The utility model also provides a cerebrospinal fluid drainage device, comprising:

[0022] A first pipeline, one end of which is provided with a needle suitable for insertion into a human body;

[0023] A second pipeline, one end of which is suitable for connecting to an external liquid storage container;

[0024] A three-way connector having a first connecting pipe, a second connecting pipe and a third connecting pipe that are interconnected;

[0025] The other end of the first pipeline is detachably connected to the first connecting pipe, and the other end of the second pipeline is detachably connected to the second connecting pipe;

[0026] It also includes an intracranial pressure detection structure, which is the aforementioned intracranial pressure detection structure; the connecting cylinder of the telescopic bag is detachably connected to the third connecting tube.

[0027] As a preferred solution, an outer wall of the connecting cylinder is provided with an external thread, an inner wall of the third connecting pipe is provided with an internal thread, and the connecting cylinder is threadedly connected to the third connecting pipe.

[0028] As a preferred solution, the three-way connector includes a cylindrical main body, the first connecting pipe and the second connecting pipe are respectively arranged at two axial ends of the cylindrical main body, and the third connecting pipe is arranged in the middle of the cylindrical main body.

[0029] As a preferred solution, one end of the first pipeline is pluggably connected to the first connecting pipe, and one end of the second pipeline is pluggably connected to the second connecting pipe;

[0030] And / or, one end of the first pipeline is provided with an external thread, the inner wall of the first connecting pipe is provided with an internal thread, and the first pipeline is threadedly connected to the first connecting pipe; one end of the second pipeline is provided with an external thread, the inner wall of the second connecting pipe is provided with an internal thread, and the second pipeline is threadedly connected to the second connecting pipe.

[0031] As a preferred solution, the soft needle head includes a soft needle body and a needle head arranged at one end of the soft needle body.

[0032] The technical solution provided by the utility model has the following advantages:

[0033] 1. The intracranial pressure detection structure of the utility model comprises a main body tube, a telescopic bag, an indicator, a scale identification member and an elastic member; wherein the main body tube has a cylindrical hollow inner cavity, the top end of which has a top surface, a top opening connected to the hollow inner cavity is arranged on the top surface, the lower end is open, and a tail opening is arranged; the telescopic bag is arranged inside the inner cavity of the main body tube, and comprises a main body part, and a connecting cylinder connected to the main body part, the top end of the main body part abuts against the inner wall of the top surface of the main body tube, the connecting cylinder passes through the top opening and is suitable for connecting to the drainage tube; the indicator is movably arranged inside the inner cavity of the main body tube, and comprises a force-bearing part and an indicating part fixedly connected to the force-bearing part, the top surface of the force-bearing part abuts against the bottom surface of the telescopic bag; the scale identification part structure is hollow and has openings at both ends, including a first part and a second part, the first part is detachably installed at the tail opening position, and the outer wall of the second part is provided with scale value lines; the inner diameter of the second part is smaller than the inner diameter of the first part to form an inner boss; the elastic part is sleeved on the indicating part, one end abuts against the force-bearing part, and the other end abuts against the inner boss; the outer diameter of the force-bearing part is the same as the outer diameter of the telescopic bag, and the outer diameter of the indicating part is smaller than the inner diameter of the second part, so that the indicating part can penetrate into the second part and indicate the scale.

[0034] In the initial state, the elastic member is in an extended state, the telescopic bag is compressed into a flat state, and the pressure value indicated by the position of the indicator in the second part is read as 0; when draining cerebrospinal fluid for the patient, the connecting cylinder is connected to the drainage tube. During the drainage of cerebrospinal fluid, a portion of the cerebrospinal fluid enters the interior of the telescopic bag. Under the action of intracranial pressure, the telescopic bag stretches and pushes the indicator to move toward the interior of the second part, thereby driving the elastic member to be compressed and contracted. When the indicator stops moving inside the second part, the value of the scale value line indicated by the tail end of the indicator is the current intracranial pressure.

[0035] That is to say, in the intracranial pressure detection structure of the utility model, after the cerebrospinal fluid enters the interior of the telescopic bag, under the action of the intracranial pressure, the telescopic bag pushes the indicator to move inside the second part, thereby detecting the intracranial pressure, and the telescopic bag is disposable and has a lower cost; even if the entire pressure detection structure is used as a disposable consumable, the cost is lower than the solution of using a pressure gauge in the prior art.

[0036] 2. The cerebrospinal fluid drainage device of the utility model comprises a first pipeline, a second pipeline, a three-way connector and an intracranial pressure detection structure; wherein one end of the first pipeline is provided with a soft needle suitable for inserting into the human body; one end of the second pipeline is suitable for an external liquid storage container; the three-way connector has a first connecting tube, a second connecting tube and a third connecting tube which are interconnected; the other end of the first pipeline is detachably connected to the first connecting tube, the other end of the second pipeline is detachably connected to the second connecting tube, and the connecting cylinder of the telescopic bag is detachably connected to the third connecting tube.

[0037] The cerebrospinal fluid drainage device of the utility model adds an intracranial pressure detection structure on the basis of the existing drainage tube. When draining cerebrospinal fluid for a patient, the intracranial pressure of the patient can be detected through the detection structure, so that the doctor can drain an appropriate amount of cerebrospinal fluid according to the intracranial pressure of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the prior art or the specific implementation methods of the present utility model, the drawings used in the description of the prior art or the specific implementation methods are briefly introduced below.

[0039] Figure 1 The utility model is a schematic diagram of the overall structure of the cerebrospinal fluid drainage device.

[0040] Figure 2 yes Figure 1 sectional view of .

[0041] Figure 3 yes Figure 1 Schematic diagram of the structure of the main body tube.

[0042] Figure 4 yes Figure 3 sectional view of .

[0043] Figure 5 yes Figure 2 Schematic diagram of the structure of the middle telescopic bag.

[0044] Figure 6 yes Figure 2 Schematic diagram of the structure of the indicator.

[0045] Figure 7 yes Figure 1 Schematic diagram of the structure of the mid-scale identification component.

[0046] Figure 8 yes Figure 1 Schematic diagram of the structure of the middle three-way connecting pipe.

[0047] Fig. 9 yes Figure 1 Schematic diagram of the structure of the first pipeline.

[0048] Figure numerals: 1. three-way connector; 11. first connecting tube; 12. second connecting tube; 13. third connecting tube; 14. cylindrical main body; 3. main body tube; 31. top opening; 32. tail opening; 33. protective cover; 4. telescopic bag; 41. main body; 42. connecting cylinder; 6. indicator; 61. force-bearing part; 62. indicator; 7. elastic part; 8. scale identification part; 81. first part; 82. second part; 83. scale value line; 84. inner boss; 9. first pipeline; 91. soft needle; 92. soft needle body; 93. needle; 10. second pipeline. DETAILED DESCRIPTION

[0049] In order to make those skilled in the art better understand the present solution, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0050] It should be noted that the terms "first", "second", etc. in the claims and description of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not limited to those steps or units clearly listed, but may also include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0051] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate orientation or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances. In addition, the term "multiple" should mean two or more. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

[0052] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. Example 1

[0053] This embodiment provides an intracranial pressure detection structure, such as Figure 1-7As shown, it comprises: a main body tube 3, a telescopic bag 4, an indicator 6, a scale identification member 8 and an elastic member 7; wherein the main body tube 3 has a cylindrical hollow inner cavity, the top end of which has a top surface, a top opening 31 connected to the hollow inner cavity is provided on the top surface, and the lower end is open and has a tail opening 32; the telescopic bag 4 is arranged inside the inner cavity of the main body tube 3, and comprises a main body part 41, and a connecting cylinder 42 connected to the main body part 41, the top end of the main body part 41 abuts against the inner wall of the top surface of the main body tube 3, and the connecting cylinder 42 passes through the top opening 31 and is suitable for connecting with the drainage tube; the indicator 6 is movably arranged inside the inner cavity of the main body tube 3, and comprises a force-bearing part 61 and an indicating part 62 fixedly connected to the force-bearing part 61; the force-bearing part The top surface of the force portion 61 abuts against the bottom surface of the telescopic bag 4; the scale identification member 8 is hollow in structure and has openings at both ends, and includes a first portion 81 and a second portion 82, wherein the first portion 81 is detachably mounted at the tail opening 32, and a scale value line 83 is provided on the outer wall of the second portion 82; the inner diameter of the second portion 82 is smaller than the inner diameter of the first portion 81 to form an inner boss 84; the elastic member 7 is sleeved on the indicating portion 62, with one end abutting against the force-bearing portion 61 and the other end abutting against the inner boss 84; the outer diameter of the force-bearing portion 61 is the same as the outer diameter of the telescopic bag 4, and the outer diameter of the indicating portion 62 is smaller than the inner diameter of the second portion 82, so that the indicating portion 62 can penetrate into the second portion 82 and indicate the scale.

[0054] In the initial state, the elastic member 7 is in an extended state, the telescopic bag 4 is compressed into a flat state, and the position of the indicator 6 in the second part 82 is in the initial state. At this time, the indicated pressure value reading is 0; when draining cerebrospinal fluid, the cerebrospinal fluid enters the telescopic bag 4, and under the action of intracranial pressure, the telescopic bag 4 extends and pushes the indicator 6 to move downward, and the elastic member 7 is compressed and contracted. When the indicator part 62 stops moving inside the second part 82, the value of the scale value line 83 indicated by the tail end of the indicator part 62 is the current intracranial pressure.

[0055] That is to say, in the intracranial pressure detection structure of this embodiment, cerebrospinal fluid enters the telescopic bag 4, so that the telescopic bag 4 is pushed by the weight to push the indicator 6 to move inside the second part 82, so that the intracranial pressure can be detected, and the telescopic bag 4 is disposable and has a lower cost.

[0056] The outer wall of the tail opening 32 is provided with an external thread, and the inner wall of the first part 81 is provided with an internal thread. The first part 81 is connected to the outer wall of the tail opening 32 through a threaded structure, and the threaded connection is more convenient and fixed more firmly.

[0057] like Figure 5As shown, the telescopic bag 4 is a cylindrical longitudinally foldable bag body. The telescopic bag 4 is foldable and can be easily extended or compressed.

[0058] like Figure 3-4 As shown, a protective sleeve 33 is formed on the top surface of the main body tube 3 , and the top opening 31 is opened at the position where the protective sleeve 33 is connected to the top surface. The protective sleeve 33 plays a role in protecting the connecting cylinder 42 .

[0059] like Figure 7 As shown, the scale value line 83 is marked with numbers 0-5 from top to bottom, and the unit of the scale value line 83 is "Kpa". Example 2

[0060] This embodiment provides a cerebrospinal fluid drainage device, such as Figure 1-9 As shown, it includes: a first pipeline 9, a second pipeline 10, a three-way connecting tube 1 and an intracranial pressure detection structure; wherein one end of the first pipeline 9 is provided with a soft needle 91 suitable for inserting into the human body; one end of the second pipeline 10 is suitable for an external liquid storage container; the three-way connector 1 has a first connecting tube 11, a second connecting tube 12 and a third connecting tube 13 that are interconnected; the other end of the first pipeline 9 is detachably connected to the first connecting tube 11, and the other end of the second pipeline 10 is detachably connected to the second connecting tube 12; the intracranial pressure detection structure is any of the intracranial pressure detection structures described above; the connecting cylinder 42 of the telescopic bag 4 is detachably connected to the third connecting tube 13.

[0061] The cerebrospinal fluid drainage device of this embodiment adds an intracranial pressure detection structure on the basis of the existing drainage tube. When draining cerebrospinal fluid for a patient, the patient's intracranial pressure can be detected through the detection structure, so that the doctor can drain an appropriate amount of cerebrospinal fluid according to the patient's intracranial pressure.

[0062] The outer wall of the connecting cylinder 42 is provided with an external thread, and the inner wall of the third connecting pipe 13 is provided with an internal thread. The connecting cylinder 42 is threadedly connected to the third connecting pipe 13. The threaded connection is easy to disassemble and firmly fixed.

[0063] like Figure 8 As shown, the three-way connector 1 includes a cylindrical main body 14, the first connecting tube 11 and the second connecting tube 12 are respectively arranged at the axial ends of the cylindrical main body 14, and the third connecting tube 13 is arranged in the middle position of the cylindrical main body 14. The third connecting tube 13 is arranged in the middle position, so that the detection structure is located in a position that is more convenient for collecting cerebrospinal fluid.

[0064] In this embodiment, one end of the first pipeline 9 is pluggably connected to the first connecting pipe 11 , and one end of the second pipeline 10 is pluggably connected to the second connecting pipe 12 .

[0065] As a variation design scheme, one end of the first pipeline 9 is provided with an external thread, the inner wall of the first connecting pipe 11 is provided with an internal thread, and the first pipeline 9 is threadedly connected to the first connecting pipe 11; one end of the second pipeline 10 is provided with an external thread, the inner wall of the second connecting pipe 12 is provided with an internal thread, and the second pipeline 10 is threadedly connected to the second connecting pipe 12.

[0066] The soft needle 91 includes a soft needle body 92 and a needle 93 disposed at one end of the soft needle body 92. The soft needle 91 can protect the patient's head and head tissue to the greatest extent.

[0067] The cerebrospinal fluid drainage device in this embodiment is used as follows: before draining cerebrospinal fluid for the patient, connect the connecting cylinder 42 with the third connecting tube 13; when in use, insert one end of the first pipeline 9 into the patient's brain, and place the second pipeline 10 at a position slightly higher than the first pipeline 9 and the intracranial pressure detection structure. During the drainage of cerebrospinal fluid, a portion of the cerebrospinal fluid flows into the interior of the telescopic bag 4. Under the action of the intracranial pressure, the telescopic bag 4 stretches and pushes the indicator 6 to move toward the interior of the second part 82, thereby driving the elastic part 7 to be compressed and contracted. When the indicator 62 stops moving inside the second part 82, the value of the scale value line 83 indicated by the tail end of the indicator 62 is the current intracranial pressure. The doctor can drain an appropriate amount of cerebrospinal fluid according to the patient's intracranial pressure.

[0068] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of this innovative technical solution.

Claims

1. An intracranial pressure detection structure, characterized in that: include: The main body tube (3) has a cylindrical hollow inner cavity, a top surface at the top end, a top opening (31) communicating with the hollow inner cavity is formed on the top surface, and the lower end is open and has a tail opening (32); The telescopic bag (4) is arranged inside the inner cavity of the main body tube (3), comprising a main body portion (41) and a connecting cylinder (42) connected to the main body portion (41), the top end of the main body portion (41) abuts against the inner wall of the top surface of the main body tube (3), and the connecting cylinder (42) passes through the top opening (31) and is suitable for connecting to the drainage tube; an indicating member (6) movably disposed inside the inner cavity of the main body tube (3), comprising a force-bearing portion (61) and an indicating portion (62) fixedly connected to the force-bearing portion (61); the top surface of the force-bearing portion (61) abuts against the bottom surface of the telescopic bag (4); The scale identification member (8) is hollow in structure and has openings at both ends, and comprises a first portion (81) and a second portion (82); the first portion (81) is detachably mounted at the tail opening (32); a scale value line (83) is provided on the outer side wall of the second portion (82); the inner diameter of the second portion (82) is smaller than the inner diameter of the first portion (81) to form an inner boss (84); An elastic member (7) is sleeved on the indicating portion (62), one end of which abuts against the force-bearing portion (61) and the other end of which abuts against the inner boss (84); The outer diameter of the force-bearing portion (61) is the same as the outer diameter of the telescopic bag (4), and the outer diameter of the indicating portion (62) is smaller than the inner diameter of the second portion (82), so that the indicating portion (62) can penetrate into the second portion (82) and indicate a scale; In the initial state, the elastic member (7) is in an extended state, the telescopic bag (4) is compressed into a flat state, and the position of the indicator (6) in the second part (82) is in the initial state, at which time the indicated pressure value reading is 0; When draining cerebrospinal fluid, the cerebrospinal fluid enters the telescopic bag (4). Under the action of intracranial pressure, the telescopic bag (4) stretches to push the indicator (6) downward, and the elastic member (7) is compressed and contracted. When the indicator part (62) stops moving inside the second part (82), the value of the scale value line (83) indicated by the tail end of the indicator part (62) is the current intracranial pressure.

2. The intracranial pressure detection structure according to claim 1, characterized in that: An outer wall of the tail opening (32) is provided with an external thread, an inner wall of the first part (81) is provided with an internal thread, and the first part (81) is connected to the outer wall of the tail opening (32) via a threaded structure.

3. The intracranial pressure detection structure according to claim 1, characterized in that: The telescopic bag (4) is a cylindrical bag body that is longitudinally foldable.

4. The intracranial pressure detection structure according to claim 1, characterized in that: A protective sleeve (33) is formed on the top surface of the main body tube (3), and the top opening (31) is provided at the position where the protective sleeve (33) is connected to the top surface.

5. The intracranial pressure detection structure according to claim 1, characterized in that: The scale value line (83) is marked with numbers from 0 to 5 from top to bottom, and the unit of the scale value line (83) is "Kpa".

6. A cerebrospinal fluid drainage device, characterized in that: include: A first pipeline (9), one end of which is provided with a soft needle (91) suitable for insertion into a human body; A second pipeline (10), one end of which is suitable for connecting to an external liquid storage container; A three-way connector (1) comprising a first connecting pipe (11), a second connecting pipe (12) and a third connecting pipe (13) which are interconnected; The other end of the first pipeline (9) is detachably connected to the first connecting pipe (11), and the other end of the second pipeline (10) is detachably connected to the second connecting pipe (12); It also includes an intracranial pressure detection structure, which is the intracranial pressure detection structure described in any one of claims 1 to 5; the connecting cylinder (42) of the telescopic bag (4) is detachably connected to the third connecting tube (13).

7. The cerebrospinal fluid drainage device according to claim 6, characterized in that: An external thread is provided on the outer wall of the connecting cylinder (42), an internal thread is provided on the inner wall of the third connecting tube (13), and the connecting cylinder (42) and the third connecting tube (13) are threadedly connected.

8. The cerebrospinal fluid drainage device according to claim 6, characterized in that: The three-way connector (1) comprises a cylindrical main body (14), the first connecting pipe (11) and the second connecting pipe (12) are respectively arranged at two axial ends of the cylindrical main body (14), and the third connecting pipe (13) is arranged in the middle of the cylindrical main body (14).

9. The cerebrospinal fluid drainage device according to claim 6, characterized in that: One end of the first pipeline (9) is pluggably connected to the first connecting pipe (11), and one end of the second pipeline (10) is pluggably connected to the second connecting pipe (12); And / or, one end of the first pipeline (9) is provided with an external thread, the inner wall of the first connecting pipe (11) is provided with an internal thread, and the first pipeline (9) is threadedly connected to the first connecting pipe (11); one end of the second pipeline (10) is provided with an external thread, the inner wall of the second connecting pipe (12) is provided with an internal thread, and the second pipeline (10) is threadedly connected to the second connecting pipe (12).

10. The cerebrospinal fluid drainage device according to claim 6, characterized in that: The soft needle head (91) comprises a soft needle body (92) and a needle head (93) arranged at one end of the soft needle body (92).

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