A cerebrospinal fluid extraction tool

Abstract

The present invention relates to a cerebrospinal fluid extraction tool, including a drainage needle, a clamping assembly that is convenient for medical staff to apply force to insert the needle, and an intracranial pressure measuring assembly for measuring the intracranial pressure of a patient; the clamping assembly includes two splints hinged together and an elastic pad arranged on the inner side of the splint to fit the outer wall of the drainage needle to increase friction, and a finger squeezing block is arranged on the outer side of the splint. Compared with the traditional cerebrospinal fluid extraction method, the cerebrospinal fluid extraction tool, through the coordinated use of two hinged splints, finger squeezing blocks and elastic pads, can effectively solve the problem that the drainage needle has a small needle diameter and is inconvenient for medical staff to apply force, effectively improve the work efficiency of cerebrospinal fluid extraction, and further avoid medical staff's hands directly contacting the drainage needle, causing medical-induced infection.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a cerebrospinal fluid extraction tool. Background Art

[0002] Cerebrospinal fluid is a colorless and transparent liquid that exists in the ventricles and subarachnoid space. Cerebrospinal fluid is continuously produced and absorbed and flows back into the veins. It plays the role of lymph in the central nervous system. It supplies certain nutrients to brain cells, transports metabolic products of brain tissue, regulates the acid-base balance of the central nervous system, and buffers the pressure of the brain and spinal cord, thus protecting and supporting the brain and spinal cord.

[0003] In the medical field, cerebrospinal fluid contains certain cells and chemical components. Under pathological conditions, substances isolated by the blood-brain barrier can enter the cerebrospinal fluid, causing changes in its composition. Cerebrospinal fluid testing can understand these changes and help diagnose diseases.

[0004] At present, the cerebrospinal fluid extraction tool used by medical staff for patients has an extremely simple structure and has some disadvantages. At present, medical staff achieve the purpose of extracting and draining the patient's cerebrospinal fluid by pulling out the guide needle inside the drainage needle. At this time, the medical staff uses a storage tube to hold the drained cerebrospinal fluid, and finally pours the contained cerebrospinal fluid into different test tubes and sends it to the medical laboratory for cerebrospinal fluid testing. This process is time-consuming and labor-intensive, and has the problem of poor hygiene. When medical staff are extracting cerebrospinal fluid from patients, the length of the drainage needle is much larger than that of a general needle. At present, medical staff only perform puncture work by wearing gloves. On the one hand, this process is not conducive to medical staff because the needle diameter of the drainage needle is small. Applying force to puncture the needle can easily affect the efficiency of medical staff in extracting cerebrospinal fluid and aggravate the patient's physical discomfort. On the other hand, when medical staff use the drainage needle to puncture the target intervertebral space of the patient, the medical staff will first grab the needle tip of the drainage needle because the drainage needle is too long. When a part of the drainage needle slowly enters the human body, the middle part of the drainage needle is grasped and the remaining part of the drainage needle is forcefully punctured. During this process, it is very easy for the medical staff to touch the drainage needle with their hands, and the drainage needle is then inserted into the patient's body. This process is very easy to cause iatrogenic bacterial infection. If the above situation occurs, it is impossible to ensure that the cerebrospinal fluid extraction work can be carried out safely, hygienically and quickly. Therefore, we propose a cerebrospinal fluid extraction tool to solve the above problems. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a cerebrospinal fluid extraction tool to solve the problem that in the prior art, the small diameter of the drainage needle makes it inconvenient for medical staff to apply force during cerebrospinal fluid extraction, and further solve the problems of poor hygiene and low safety factor during cerebrospinal fluid extraction.

[0006] The present invention is achieved through the following technical solutions:

[0007] A cerebrospinal fluid extraction tool comprises a drainage needle, a clamping assembly for facilitating medical personnel to apply force to insert the needle, and an intracranial pressure measuring assembly for measuring the intracranial pressure of a patient;

[0008] The clamping assembly comprises two hinged clamps and an elastic pad arranged on the inner side of the clamps to fit the outer wall of the drainage needle to increase friction, and a finger squeezing block is arranged on the outer side of the clamps;

[0009] The end of the drainage needle is connected to a cerebrospinal fluid processing assembly through a first rubber tube;

[0010] The intracranial pressure measurement component includes a pressure sensor arranged on a first rubber tube for measuring intracranial pressure and a first display screen arranged on the first rubber tube for displaying intracranial pressure information measured by the pressure sensor.

[0011] Furthermore, the cerebrospinal fluid processing component includes a speed regulation component, which includes a storage tube connected to the end of the drainage needle through a first rubber tube, a vacuum cylinder connected to the storage tube through a second rubber tube for evacuating the inside of the storage tube, and a deformable plastic layer arranged inside the storage tube and capable of deforming with changes in gas pressure.

[0012] Furthermore, the deformable plastic layer is made of plastic cloth.

[0013] Furthermore, the two ends of the first rubber tube are respectively inserted into the interior of the drainage needle and the storage tube through rubber stoppers, and the two ends of the second rubber tube are also respectively inserted into the interior of the storage tube and the vacuum cylinder through rubber stoppers, and the rubber stoppers are hollow structures.

[0014] Furthermore, it also includes a monitoring component for monitoring changes in gas pressure inside the storage tube, and the monitoring component includes an air pressure sensor arranged inside the storage tube for sensing air pressure changes and a second display screen arranged on the surface of the storage tube for displaying air pressure change information.

[0015] Furthermore, the monitoring component also includes a battery shell arranged outside the storage tube for installing the battery.

[0016] Furthermore, a pressure relief port for exhausting and relieving pressure inside the storage tube is opened at the top of the storage tube, and a plug for sealing the pressure relief port is provided at the top end of the storage tube via a connecting rope.

[0017] Furthermore, it also includes a regulating component for regulating cerebrospinal fluid extraction and drainage, the regulating component includes a telescopic sleeve and a telescopic tube that are arranged around the first rubber tube and are used to apply a tightening force to the first rubber tube, one end of the telescopic sleeve and the telescopic tube are hingedly connected, the other end of the telescopic sleeve is provided with at least two limiting holes, and the other end of the telescopic tube is provided with an elastic limiting key that engages with the limiting hole to facilitate the fixing of the telescopic tube after it is inserted into the telescopic sleeve.

[0018] Furthermore, the cerebrospinal fluid processing component is a test tube connected to the end of the drainage needle.

[0019] The beneficial effects of the present invention are:

[0020] 1. The cerebrospinal fluid extraction tool is used in conjunction with two hinged splints, a finger squeezing block and an elastic pad. When the medical staff grasps the drainage needle to perform acupuncture drainage on the patient's cerebrospinal fluid, they can grasp the splint at the limiting position of the finger squeezing block and apply force to the splint, thereby transmitting the force to the elastic pad. At this time, the elastic pad will be in close contact with the drainage needle to enhance the clamping force of the medical staff on the drainage needle, thereby facilitating the medical staff to extract cerebrospinal fluid. Compared with the traditional cerebrospinal fluid extraction method, this technical solution can effectively solve the problem that the drainage needle has a small needle diameter and is inconvenient for medical staff to apply force, effectively improves the work efficiency of cerebrospinal fluid extraction, reduces the patient's physical discomfort, and further avoids the problem of medical staff's hands directly contacting the drainage needle, which may cause iatrogenic infection to the patient.

[0021] 2. The cerebrospinal fluid extraction tool, through the coordinated use of the hinged telescopic sleeve and telescopic tube, the limit hole and the elastic limit key, can facilitate medical staff to freely control the flow and extraction of cerebrospinal fluid. According to the actual cerebrospinal fluid extraction situation, when it is necessary to stop the cerebrospinal fluid extraction work, the medical staff only needs to push the telescopic tube deep into the telescopic sleeve, and use the engagement of the elastic limit key and the limit hole to achieve the purpose of fixing the telescopic tube, thereby improving the contact force between the telescopic tube and the telescopic sleeve and the first rubber tube, so as to achieve the purpose of tightening the first rubber tube and preventing the cerebrospinal fluid from being extracted and flowing. When cerebrospinal fluid needs to be extracted, medical staff can engage the elastic limit key into a specific limit hole according to the actual operation on site, thereby reducing the contact force between the telescopic tube and the telescopic sleeve and the first rubber tube. At this time, the cerebrospinal fluid can flow freely. Compared with the traditional method of extracting the guide needle inside the drainage needle and then collecting the cerebrospinal fluid with the help of external storage tools, this technical solution is more consistent in actual operation and is more hygienic and safer than the traditional method of extracting cerebrospinal fluid. It reduces the operating steps of medical staff directly contacting the drainage needle, and further avoids medical-induced infection to patients.

[0022] 3. The cerebrospinal fluid extraction tool, through the coordinated use of the pressure sensor arranged on the first rubber tube and the second display screen, when the medical staff extracts cerebrospinal fluid from the patient, the first rubber tube and the drainage needle can penetrate into the human body to detect the real-time information of the patient's intracranial pressure. This makes it convenient for the medical staff to extract cerebrospinal fluid when the patient's intracranial pressure is normal. Compared with the traditional intracranial pressure measurement method, which measures the cerebrospinal fluid pressure by connecting a pressure measuring tube after puncture and then measures the intracranial pressure by the floating of mercury in the pressure measuring tube, the technical solution of the present application is simpler, more efficient and healthier, and is more suitable for medical staff to measure the intracranial pressure in a short time and subsequently extract the intracranial pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a cross-sectional view of a first embodiment of the present invention;

[0024] Figure 2 It is a front view of the first embodiment of the present invention;

[0025] Figure 3 is a top view of a first embodiment of the present invention;

[0026] Figure 4 A partial side sectional view of the regulating component of the first embodiment of the present invention;

[0027] Figure 5 FIG. 4 is a schematic structural diagram of a second embodiment of the present invention.

[0028] In the figure: 1. speed control component; 101. vacuum pump; 102. deformable plastic layer; 2. storage tube; 3. plug body; 4. clamping component; 401. splint; 402. elastic pad; 403. finger squeeze block; 5. drainage needle; 6. control component; 601. telescopic tube; 602. telescopic sleeve; 7. monitoring component; 701. air pressure sensor; 702. second display screen; 703. battery shell; 8. intracranial pressure measurement component; 801. pressure sensor; 802. first display screen; 9. cerebrospinal fluid processing component; 10. test tube. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0034] First embodiment:

[0035] See also Figure 1-4 The present invention provides a technical solution: a cerebrospinal fluid extraction tool, comprising a drainage needle 5, a clamping component 4 for facilitating medical personnel to apply force to insert the needle, and an intracranial pressure measuring component 8 for measuring the intracranial pressure of a patient;

[0036] The clamping assembly 4 includes two hinged splints 401 and an elastic pad 402 arranged on the inner side of the splint 401 to fit the outer wall of the drainage needle 5 to increase friction. A finger squeezing block 403 is arranged on the outer side of the splint 401. It should be emphasized here that when the medical staff squeezes the finger squeezing block 403, the splint 401 feels the pressure applied by the medical staff's hand and transmits the pressure to the elastic pad 402. It can be seen here that there is a gap between the elastic pad 402 and the drainage needle 5 (as shown in the attached manual). Figure 3), when the elastic pad 402 feels the pressure applied by the medical staff, the elastic pad 402 gradually approaches the drainage needle 5 and is tightly attached to the drainage needle 5, so as to achieve the purpose of increasing the friction between the elastic pad 402 and the drainage needle 5. Here, the two splints 401 are set to be hingedly connected. The purpose is that after the drainage needle 5 completes the spinal puncture of the patient, the two splints 401 can be immediately unfolded and taken out, and the medical staff places the finger part at the finger squeezing block. The purpose is to more effectively facilitate the medical staff to apply force to the splint 401 and improve the clamping force on the drainage needle 5;

[0037] The end of the drainage needle 5 is connected to a cerebrospinal fluid processing assembly 9 through a first rubber tube. Here, medical staff can process the cerebrospinal fluid after extraction through the cerebrospinal fluid processing assembly 9.

[0038] The intracranial pressure measuring component 8 includes a pressure sensor 801 arranged on the first rubber tube for measuring the intracranial pressure and a first display screen 802 arranged on the first rubber tube for displaying the intracranial pressure information measured by the pressure sensor 801. The pressure sensor 801 and the first display screen 802 can be powered by an external power supply through a wire or by an external lithium battery. The model of the pressure sensor 801 can be 20KG200KG3T5T. When medical staff need to extract cerebrospinal fluid from the patient, they can first tighten the first rubber tube through the regulating component 6 to prevent the patient's cerebrospinal fluid from flowing into the inside of the receiving tube 2. Then the pressure sensor 801 can detect the specific situation of the patient's intracranial pressure through the first rubber tube to the drainage needle 5, and transmit the specific situation information to the first display screen 802, so that the medical staff can grasp the patient's intracranial pressure at any time. It should be emphasized here that intracranial pressure, that is, cranial cavity The pressure of the cerebrospinal fluid is normally 80-180 mm of water column and 8-18 mm of mercury. According to the "Guide to Practical Skills of the National Medical Qualification Examination" p325, the cerebrospinal fluid pressure of a normal adult in a supine position is 0.78-1.76 kPa (80-180 mm of water column) or 40-50 drops / min, and fluctuates within 10 mm of water column with breathing. The pressure of a child is 0.4-1.0 kPa (40-100 mm of water column). The intracranial pressure is measured before the cerebrospinal fluid is extracted and drained. One of the reasons for increased intracranial pressure and excessive cerebrospinal fluid is that the cerebrospinal fluid is too much. At this time, if the cerebrospinal fluid is drained too quickly, it will cause brain herniation. Therefore, severe intracranial hypertension is a contraindication for lumbar puncture, especially for patients with posterior cranial fossa lesions. Therefore, if the intracranial pressure is too high, it is inconvenient for medical staff to extract cerebrospinal fluid from the patient. If the intracranial pressure is normal, the cerebrospinal fluid can be drained to the inside of the receiving tube 2 through the regulating component 6.

[0039] In the present invention, the cerebrospinal fluid processing assembly 9 includes a speed regulating assembly 1, which includes a receiving tube 2 connected to the end of the drainage needle through a first rubber tube, a vacuum pump 101 connected to the receiving tube 2 through a second rubber tube for evacuating the inside of the receiving tube 2, and a deformable plastic layer 102 arranged inside the receiving tube 2 and deformable with the change of gas pressure. When the medical staff finds that the cerebrospinal fluid extraction and drainage speed is slow, the vacuum pump 101 can be used to evacuate the gas inside the receiving tube 2. When the gas pressure inside the receiving tube 2 decreases, the vacuum pump 101 can be used to evacuate the gas inside the receiving tube 2. , the deformable plastic layer 102 gradually expands, and at the same time reduces the gas pressure inside the deformable plastic layer 102. It should be emphasized here that after the cerebrospinal fluid is drained into the storage tube 2, the cerebrospinal fluid directly flows into the deformable plastic layer 102. When the patient's internal air pressure remains unchanged, the air pressure inside the deformable plastic layer 102 decreases, and the pressure difference between the two gradually increases, so the cerebrospinal fluid extraction and diversion speed increases. It should be noted here that a one-way valve is provided on the second rubber tube to prevent the extracted gas from flowing back into the storage tube 2.

[0040] In the present invention: the material used for the deformable plastic layer 102 is plastic cloth, which has the advantages of good flexibility, high working strength, and not easy to break. The deformable plastic layer 102 made of plastic cloth is used inside the storage tube 2. When the gas pressure inside the storage tube 2 changes, the deformable plastic layer 102 changes due to the external gas pressure, and thus slightly deforms. It should be emphasized here that after the cerebrospinal fluid is extracted into the storage tube 2, it finally flows into the inner side of the deformable plastic layer 102. When the gas pressure inside the storage tube 2 changes, the deformable plastic layer 102 senses the change in the internal gas pressure of the storage tube 2. After it is deformed, the gas pressure inside the deformable plastic layer 102 also changes accordingly. The advantage of this technical solution is that no other medium comes into contact with the extracted cerebrospinal fluid and directly accelerates the extraction of cerebrospinal fluid, thereby further ensuring the efficiency of the cerebrospinal fluid extraction.

[0041] In the present invention: the two ends of the first rubber tube are respectively inserted into the interior of the drainage needle 5 and the storage tube 2 through rubber stoppers, and the two ends of the second rubber tube are also respectively inserted into the interior of the storage tube 2 and the suction cylinder 101 through rubber stoppers. The rubber stopper is a hollow structure. During the extraction process of cerebrospinal fluid, it will flow through the rubber stopper, the first rubber tube and the second rubber tube. The interior of the rubber stopper is set to a hollow structure, which is convenient for the flow of cerebrospinal fluid. The rubber property of the rubber stopper is further used to increase the sealing with the drainage needle 5, the storage tube 2 and the suction cylinder 101, so as to prevent the cerebrospinal fluid from flowing out through the gaps of the drainage needle 5, the storage tube 2 or the suction cylinder 101.

[0042] In the present invention: it also includes a monitoring component 7 for monitoring the pressure change inside the storage tube 2. The monitoring component 7 includes an air pressure sensor 701 arranged inside the storage tube 2 for sensing the air pressure change and a second display screen 702 arranged on the surface of the storage tube 2 for displaying the air pressure change information. The model of the air pressure sensor 701 can be a MIK-P300 air pressure sensor. The air pressure sensor 701 is an instrument for measuring the absolute pressure of the gas. The air pressure sensor 701 and the second display screen 702 are connected via a connecting line to transmit signals. The air pressure sensor 701 and the second display screen 702 are arranged here for the purpose of monitoring the changes in the gas pressure inside the storage tube 2 at any time. When the medical staff finds that the gas pressure inside the storage tube 2 is too high and is not conducive to the extraction and diversion of cerebrospinal fluid, the internal gas of the storage tube 2 can be exhausted by means of a vacuum pump 101, thereby changing the internal gas pressure of the storage tube 2 and the deformable plastic layer 102 in turn.

[0043] In the present invention: the monitoring component 7 also includes a battery shell 703 arranged outside the storage tube 2 for installing batteries. By providing the battery shell 703, it is convenient to install batteries to provide power to the second display screen 702 and the air pressure sensor 701.

[0044] In the present invention: a pressure relief port for exhausting and relieving pressure inside the storage tube 2 is opened at the top of the storage tube 2, and a plug body 3 for sealing the pressure relief port is set at the top of the storage tube 2 through a connecting rope. When the medical staff starts to extract cerebrospinal fluid, the plug body 3 can be pulled out, so that the pressure inside the storage tube 2 can be relieved, which facilitates the smooth flow of cerebrospinal fluid to the inside of the storage tube 2. The pressure relief port mentioned here is actually an air outlet opened at the top of the storage tube 2 (relative to the top of the deformable plastic layer 102). When the plug body 3 is pulled out at the air outlet, the gas inside the deformable plastic layer 102 can be discharged through the air outlet to avoid excessive gas pressure inside the deformable plastic layer 102, which causes the cerebrospinal fluid to be unable to flow into the inside of the deformable plastic layer 102.

[0045] The present invention also includes a regulating component 6 for regulating cerebrospinal fluid extraction and drainage. The regulating component 6 includes a telescopic sleeve 602 and a telescopic tube 601 which are arranged around the first rubber tube and are used to apply a tightening force to the first rubber tube. One end of the telescopic sleeve 602 and the telescopic tube 601 are hingedly connected, and the other end of the telescopic sleeve 602 is provided with at least two limiting holes, and the other end of the telescopic tube 601 is provided with an elastic limiting key engaged with the limiting holes so that the telescopic tube 601 can be inserted into the telescopic sleeve 602 and fixed. When the medical staff starts to extract cerebrospinal fluid from the patient, the position of the telescopic tube 601 inside the telescopic sleeve 602 can be adjusted, so as to adjust the clamping contact force of the telescopic tube 601 and the telescopic sleeve 602 on the first rubber tube (please refer to the appendix of the specification for details). Figure 5), when the clamping force is large, the purpose of tightening the first rubber tube is achieved, and the cerebrospinal fluid cannot continue to flow. When the clamping force is small, the first rubber tube is relatively loose, and the cerebrospinal fluid can flow smoothly. It should be emphasized here that the elastic limit key mentioned in this application has been described in the authorized and disclosed utility model case "A device for building construction simulation based on BIM" (CN208281424U). The structural principle of the elastic limit key has been described, so this application will not repeat it.

[0046] Working principle: Before use, the medical staff should first check the safety of the local structure of the tool. When using, the medical staff should first disinfect and sterilize the tool to ensure that it is in a sterile environment. First, adjust the clamping component 4 close to the middle position of the drainage needle. At this time, the medical staff puts their fingers on the finger squeezing block 403 and squeezes the splint 401 with their hands. The splint 401 transmits the force to the elastic pad 402. At this time, the clamping force between the elastic pad 402 and the drainage needle 5 can be increased, so that the medical staff can apply force to insert the drainage needle 5 into the target intervertebral space of the patient. After the front half of the drainage needle is inserted into the patient's body, the hand slightly loosens the clamping force on the splint 401, and manually adjusts the clamping component 4 to the drainage needle. The remaining end of the drainage needle 5, at this time the medical staff again pinches the splint 401 with his hand, and increases the clamping force between the elastic pad 402 and the drainage needle 5 by transmitting the force to the elastic pad 402. The medical staff continues to apply force to insert the remaining part of the drainage needle 5 into the patient's body, and then the medical staff unfolds the two splints 401 to achieve the purpose of removing the clamping assembly 4 from the drainage needle 5, and then the medical staff pulls the plug body 3 away from the inner side of the pressure relief port, and then the medical staff presses the elastic limit key to make the elastic limit key begin to contract, and slowly pulls the telescopic tube 601 out of the deep inside of the telescopic sleeve 602 until the first rubber tube is effectively dilated, and cerebrospinal fluid flows out of the patient's body through the first The rubber tube flows into the interior of the storage tube 2 and flows into the interior of the deformable plastic layer 102. When the medical staff finds that the cerebrospinal fluid flows slowly, they can manually pull the vacuum pump 101 to extract the gas from the internal cavity between the storage tube 2 and the deformable plastic layer 102 (the "internal cavity" mentioned in this paragraph refers to the internal cavity between the storage tube 2 and the deformable plastic layer 102, and no further description will be given later). At this time, the gas pressure in the internal cavity gradually decreases, the deformable plastic layer 102 gradually expands, and at the same time, the internal gas pressure of the deformable plastic layer 102 also gradually decreases. At this time, the pressure in the patient's body remains unchanged, but the pressure difference at both ends of the cerebrospinal fluid flow changes, and the patient's body The pressure inside is increasingly greater than the gas pressure inside the deformable plastic layer 102, thereby accelerating the flow of cerebrospinal fluid. At the same time, during the process of extracting cerebrospinal fluid, the air pressure sensor 701 has been monitoring the gas pressure in the internal cavity, and transmitting the information of the pressure change through the second display screen 702. When the gas pressure in the internal cavity is too high, which affects the smooth extraction of cerebrospinal fluid by medical staff, the medical staff can also immediately extract the gas inside the storage tube 2 through the vacuum cylinder 101. When the extraction of cerebrospinal fluid is completed, the medical staff pulls out the first rubber tube and the second rubber tube, and immediately sends the cerebrospinal fluid collected in the storage tube 2 to the laboratory for testing.

[0047] Second embodiment:

[0048] like Figure 5As shown, different from the first embodiment, the cerebrospinal fluid processing component 9 of this embodiment is a test tube 10 connected to the end of the drainage needle. The cerebrospinal fluid can be directly stored through the test tube 10, which is convenient for medical staff to directly send it to the laboratory for testing.

[0049] The test tube 10 is provided with a scale, and the extraction amount can be controlled to ensure the detection effect and reduce waste.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A cerebrospinal fluid extraction tool, comprising a drainage needle, characterized in that: It also includes a clamping assembly for medical personnel to facilitate the application of force for needle insertion and an intracranial pressure measuring assembly for measuring the intracranial pressure of the patient; The clamping assembly comprises two hinged clamps and an elastic pad arranged on the inner side of the clamps to fit the outer wall of the drainage needle to increase friction, and a finger squeezing block is arranged on the outer side of the clamps; The end of the drainage needle is connected to a cerebrospinal fluid processing assembly through a first rubber tube; The intracranial pressure measurement component includes a pressure sensor disposed on a first rubber tube for measuring intracranial pressure and a first display screen disposed on the first rubber tube for displaying intracranial pressure information measured by the pressure sensor. The cerebrospinal fluid processing component includes a speed regulating component, the speed regulating component includes a storage tube connected to the end of the drainage needle through the first rubber tube, a vacuum pump connected to the storage tube through a second rubber tube for evacuating air from the inside of the storage tube, and a deformable plastic layer disposed inside the storage tube that can deform with changes in gas pressure, wherein the deformable plastic layer is made of plastic cloth, and further includes a monitoring component for monitoring changes in gas pressure inside the storage tube, the monitoring component includes an air pressure sensor disposed inside the storage tube for sensing air pressure changes and a second display screen disposed on the surface of the storage tube for displaying air pressure change information, and the monitoring component further includes a battery shell disposed outside the storage tube for mounting batteries; It also includes a regulating component for regulating cerebrospinal fluid extraction and drainage, the regulating component includes a telescopic sleeve and a telescopic tube that are arranged around the first rubber tube and are used to apply a tightening force to the first rubber tube, one end of the telescopic sleeve and the telescopic tube are hingedly connected, the other end of the telescopic sleeve is provided with at least two limiting holes, and the other end of the telescopic tube is provided with an elastic limiting key that engages with the limiting hole to facilitate the fixing of the telescopic tube after it is inserted into the telescopic sleeve.

2. A cerebrospinal fluid extraction tool according to claim 1, characterized in that: The two ends of the first rubber tube are respectively inserted into the interior of the drainage needle and the storage tube through rubber stoppers, and the two ends of the second rubber tube are also respectively inserted into the interior of the storage tube and the vacuum cylinder through rubber stoppers. The rubber stoppers are hollow structures.

3. A cerebrospinal fluid extraction tool according to claim 2, characterized in that: A pressure relief port for exhausting and relieving pressure inside the storage tube is provided at the top of the storage tube, and a plug for sealing the pressure relief port is provided at the top of the storage tube via a connecting rope.

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