Medical clinical cerebrospinal fluid taking tube

Abstract

The present application relates to a kind of medical clinical cerebrospinal fluid taking tube, the taking tube includes tube body, puncture part and lateral taking port, wherein, the puncture part is arranged at the front end of the tube body, the lateral taking port is arranged at the lateral position of the puncture part, the puncture part has puncture head and lateral concave cavity, the puncture head has puncture point, the puncture point is arranged on the one side of the central axis in the tube body, the puncture point has vertical offset distance between the central axis, the puncture point and the tube wall above the lateral taking port have protruding height, the taking tube further includes quantitative extractor, extractor and break release structure.

Description

TECHNICAL FIELD

[0001] The present application relates to a cerebrospinal fluid collection tube, in particular to a cerebrospinal fluid collection tube for collecting cerebrospinal fluid in medical clinics. BACKGROUND

[0002] Cerebrospinal fluid is a clear, colorless fluid that is secreted by the choroid plexus in the brain ventricular system and the spinal cord's leptomeningeal space, and enters the subarachnoid space through the brain ventricular system, and then flows in the cerebrospinal fluid circulation pathway.

[0003] Cerebrospinal fluid has many important functions in the central nervous system of the human body, for example, cerebrospinal fluid can be a cushion for the brain and spinal cord, reducing the damage of external impact to the central nervous system, and cerebrospinal fluid can also maintain the health of neural tissue and ensure the normal function of nerve cells by transporting nutrients and removing metabolic waste.

[0004] When the central nervous system is affected by diseases such as bacterial infection, inflammation, and bleeding, the pathological changes will leave traces in the cerebrospinal fluid, so the cerebrospinal fluid can reflect the pathological changes in the central nervous system, and the cerebrospinal fluid sample is a common operation in the medical field, and medical staff can obtain rich diagnostic information by analyzing the cerebrospinal fluid to confirm various diseases in the central nervous system.

[0005] Lumbar puncture, also known as spinal puncture, is a medical procedure commonly used to collect cerebrospinal fluid samples. When the medical procedure for collecting cerebrospinal fluid samples is performed, the patient can first lie on the examination bed with his back to the medical staff, or sit straight on the chair, then bend his head forward and bend his waist and hold his knees, and expose the lumbar intervertebral space to the greatest extent to improve the success rate of collecting cerebrospinal fluid.

[0006] After the patient is positioned, the medical staff will disinfect the puncture site and inject a local anesthetic to reduce pain during the puncture. The puncture procedure is usually performed between the third and fourth lumbar vertebrae, or between the fourth and fifth lumbar vertebrae. When the lumbar puncture needle is inserted into the lumbar intervertebral space and enters the subarachnoid space, the needle core in the lumbar puncture needle is removed, and then the cerebrospinal fluid is drained into three or four sterile test tubes. The volume of the collected cerebrospinal fluid is one to ten milliliters. After the puncture, the medical staff will remove the lumbar puncture needle, cover the puncture site with gauze, and send the collected cerebrospinal fluid to the laboratory for testing.

[0007] However, the traditional method of collecting cerebrospinal fluid samples also has many disadvantages, which will be described as follows.

[0008] First, the conventional collection method needs to use several test tubes to collect cerebrospinal fluid samples. During the transfer of cerebrospinal fluid to several test tubes, the cerebrospinal fluid sample is exposed to the external environment, which has the risk of contaminating the sample and affecting the accuracy of analyzing the cerebrospinal fluid.

[0009] Secondly, using several test tubes to collect cerebrospinal fluid samples requires multiple transfers of test tubes, increasing the complexity of the operation and the possibility of errors in the collection process, resulting in the need for medical personnel with high technical level to successfully perform the process.

[0010] In addition, the conventional method of collecting cerebrospinal fluid samples also has the problem of human tissue remaining on the needle, which can be skin tissue, muscle tissue, arachnoid membrane tissue, etc. The remaining human tissue can block the needle, causing the flow of cerebrospinal fluid to be blocked, making the process of collecting cerebrospinal fluid samples unable to proceed smoothly.

[0011] Thirdly, the human tissue remaining on the needle will cause greater resistance during the puncture process, increasing the patient's pain and discomfort.

[0012] Thirdly, the human tissue remaining on the needle may mix into the collected cerebrospinal fluid sample, affecting the purity of the cerebrospinal fluid sample, and causing inaccurate laboratory analysis results.

[0013] Finally, in the conventional puncture process, the flow rate of cerebrospinal fluid is not easy to control. If the flow rate is too slow, it will not be able to collect enough cerebrospinal fluid sample volume. If the flow rate is too fast, it will collect too much cerebrospinal fluid sample volume and cause the patient to have a headache or low cranial pressure symptoms. As mentioned above, the main shortcomings of the conventional method of collecting cerebrospinal fluid samples. SUMMARY

[0014] The technical solution adopted by the present application is: a medical clinical cerebrospinal fluid collection tube, characterized in that: the collection tube comprises a tube body, a puncture part and a lateral liquid collection port, wherein the puncture part is arranged at the front end of the tube body, and the lateral liquid collection port is arranged at the lateral position of the puncture part.

[0015] The puncture part has a puncture head and a lateral recessed cavity, wherein the lateral recessed cavity is located between the puncture head and the tube wall of the tube body, the lateral liquid collection port is arranged on the groove bottom surface of the lateral recessed cavity, and the lateral liquid collection port is communicated with the lumen of the tube body.

[0016] The puncture head has a puncture point, and the puncture point is located at the most front end of the puncture head.

[0017] The puncture point is arranged offset to one side of the central axis of the tube body, and has a vertical offset distance between the puncture point and the central axis.

[0018] The puncture point is convexly arranged below the lateral liquid outlet, and has a convex height between the puncture point and the pipe wall above the lateral liquid outlet. The puncture head covers the lateral liquid outlet between the puncture head and the pipe body.

[0019] The liquid taking tube further comprises a quantitative extractor, which comprises a piston body made of elastic material, the piston body having a body, a liquid outlet sealing body and an outer convex body, wherein the liquid outlet sealing body is arranged on one side of the body, and the outer convex body is connected to the liquid outlet sealing body.

[0020] The liquid outlet sealing body corresponds to the lateral liquid outlet. When the liquid taking tube is punctured and inserted into the human body, the body is inserted into the bottom of the pipe cavity of the pipe body, the liquid outlet sealing body is sealed inside the lateral liquid outlet, and the outer convex body is convexly arranged in the lateral liquid outlet.

[0021] When the liquid taking tube is used to extract cerebrospinal fluid, the piston body as a whole moves upward along the pipe cavity of the pipe body. At this moment, the liquid outlet sealing body drives the outer convex body to move upward, so that the outer convex body is physically deformed, and the outer convex body is retracted into the pipe cavity and synchronously moves upward with the liquid outlet sealing body.

[0022] The quantitative extractor further comprises an extractor.

[0023] The liquid taking tube further comprises a breakage release structure. An external force is applied to the breakage release structure, which can cause the breakage release structure to fall off from the liquid taking tube and form a release opening on the liquid taking tube, so that the liquid taking tube is in a cerebrospinal fluid release state, and the quantitative cerebrospinal fluid in the liquid taking tube can overflow to the outside of the liquid taking tube through the release opening.

[0024] The breakage release structure is arranged on the pipe body of the liquid taking tube.

[0025] The breakage release structure comprises a breakable groove arranged on the pipe body of the liquid taking tube, and the breakable groove is in communication with the lateral liquid outlet to form the breakage release structure. When the breakage release structure falls off from the liquid taking tube, the release opening formed by the breakage release structure is an inclined opening.

[0026] The lateral inner cavity has a force applying surface, and the puncture point is located at the lower end of the force applying surface, and the force applying surface is located at the lower end of the lateral liquid outlet.

[0027] The breakage release structure can be folded down from the liquid taking tube by a force applying tool, and the force applying tool comprises a force applying plate, a connecting ring plate and a supporting plate, wherein the connecting ring plate is connected between the force applying plate and the supporting plate.

[0028] When the breakage release structure is disassembled, the force applying plate is pressed on the force applying surface, and the supporting plate is placed on the liquid taking tube.

[0029] The utility model provides a medical clinical cerebral spinal fluid taking tube, its characterized in be: the taking tube includes the pipe body, puncture part and lateral taking liquid mouth, the puncture part mobilely covers the pipe body, lateral taking liquid mouth sets up in the lateral position of the pipe body, and lateral taking liquid mouth communicates with the pipe cavity of the pipe body.

[0030] The puncture part has a puncture head and a plurality of collars fixedly connected to the puncture head. The puncture head has a puncture point located at the most forward end of the puncture head.

[0031] The puncture point is offset to one side of the central axis of the pipe body, and has a perpendicular offset distance between the puncture point and the central axis.

[0032] The puncture point is convexly arranged below the lateral taking liquid mouth, and has a convex height between the puncture point and the pipe wall above the lateral taking liquid mouth. The puncture head covers the lateral taking liquid mouth between the puncture head and the pipe body.

[0033] The puncture part forms a broken release structure. When the puncture part is removed from the pipe body, the lateral taking liquid mouth forms the release opening. The quantified cerebral spinal fluid in the taking tube can overflow to the outside of the taking tube through the lateral taking liquid mouth.

[0034] The utility model provides a medical clinical cerebral spinal fluid taking tube. The collector can independently contain the cerebral spinal fluid sample, avoid the cerebral spinal fluid sample being exposed to the external environment, and improve the accuracy of analyzing the cerebral spinal fluid sample.

[0035] The utility model provides a medical clinical cerebral spinal fluid taking tube. The collector can independently move and solve the problem of needing to transfer the test tube multiple times, and can smoothly collect the cerebral spinal fluid sample.

[0036] The utility model provides a medical clinical cerebral spinal fluid taking tube. The collector can independently move and solve the problem of needing to transfer the test tube multiple times, and can smoothly collect the cerebral spinal fluid sample.

[0037] The utility model provides a medical clinical cerebral spinal fluid taking tube. The collector can independently move and solve the problem of needing to transfer the test tube multiple times, and can smoothly collect the cerebral spinal fluid sample. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is a use schematic drawing of the utility model.

[0039] Figure 2 It is a schematic drawing of the puncture part of the utility model.

[0040] Figure 3 It is a schematic drawing of the lateral taking liquid mouth of the utility model.

[0041] Figure 4The schematic diagram of the position of the puncture point of the present application.

[0042] Figure 5 The schematic diagram of the action of the present application.

[0043] Figure 6 The schematic diagram of the action of the piston body of the present application.

[0044] Figure 7 The schematic diagram of the liquid taking port closure body and the outer convex body of the present application.

[0045] Figure 8 The schematic diagram of the present application for storing the quantified cerebrospinal fluid in the tube body.

[0046] Figure 9 The schematic diagram of the breakage release structure of the present application.

[0047] Figure 10 The schematic diagram of the breakage release structure of the present application.

[0048] Figure 11 The schematic diagram of the force applying tool of the present application.

[0049] Figure 12 The schematic diagram of the working of the force applying tool of the present application.

[0050] Figure 13 The schematic diagram of the second embodiment of the breakage release structure of the present application.

[0051] Figure 14 The schematic diagram of the third embodiment of the breakage release structure of the present application.

[0052] Figure 15 The exploded schematic diagram of the third embodiment of the breakage release structure of the present application.

[0053] Figure 16 The structural schematic diagram of the third embodiment of the breakage release structure of the present application.

[0054] Figure 17 The schematic diagram of the quantified cerebrospinal fluid release of the present application. DETAILED DESCRIPTION

[0055] As shown in the figure, a medical clinical cerebrospinal fluid taking tube, when working, proceeds according to the following steps: Figures 1 to 17 As shown in the figure, the first step, the taking tube 100 is punctured and inserted into the human body, so that the front end of the taking tube 100 is immersed in the cerebrospinal fluid A in the subarachnoid space of the human body.

[0056] Figures 1 to 5 As shown in the figure, the second step, the force applying tool 200 is used to apply force to the taking tube 100, so that the taking tube 100 is pulled out of the human body.

[0057] ​In practice, the fluid collection tube 100 can be used to perform puncture between the third and fourth lumbar vertebrae or between the fourth and fifth lumbar vertebrae.

[0058] The fluid collection tube 100 includes a tube body 210, a puncture portion 220, and a lateral fluid collection port 230. The puncture portion 220 is located at the front end of the tube body 210, and the lateral fluid collection port 230 is located at a lateral position of the puncture portion 220.

[0059] The puncture portion 220 has a puncture head 240 and a lateral concave cavity 250, wherein the lateral concave cavity 250 is located between the puncture head 240 and the tube wall 211 of the tube body 210, and the lateral liquid intake port 230 is disposed on the bottom surface 251 of the groove of the lateral concave cavity 250, and the lateral liquid intake port 230 is connected to the lumen 213 of the tube body 210.

[0060] The puncture head 240 has a puncture point 241, which is located at the foremost position of the puncture head 240. In practice, when performing a puncture, the puncture point 241 is the first to contact the human body, and the puncture is mainly performed by using the puncture point 241 to break through the human tissue. The puncture point 241 is offset to one side of the central axis 212 of the tube body 210, and there is a vertical offset distance D1 between the puncture point 241 and the central axis 212.

[0061] The puncture point 241 protrudes below the lateral fluid intake port 230, and there is a protrusion height D2 between the puncture point 241 and the tube wall 211 above the lateral fluid intake port 230. The puncture head 240 covers the lateral fluid intake port 230 between the puncture head 240 and the tube body 210. When performing the puncture, the puncture head 240 breaks through the human tissue and performs the puncture. The human tissue will not directly contact the lateral fluid intake port 230, thereby avoiding the situation where the human tissue blocks the lateral fluid intake port 230 during the puncture.

[0062] like Figures 6 to 7 As shown, the second step is to use the sampling tube 100 to extract cerebrospinal fluid and obtain a quantitative amount of cerebrospinal fluid A1 in the sampling tube 100.

[0063] The liquid collection tube 100 also includes a quantitative extractor 310, which includes a piston body 320 made of an elastic material, such as silicone or rubber. The piston body 320 has a body 321, a liquid collection port closure 322, and an external protrusion 323. The liquid collection port closure 322 is disposed on one side of the body 321, and the external protrusion 323 is connected to the liquid collection port closure 322.

[0064] The liquid extraction port closure 322 corresponds to the lateral liquid extraction port 230. In the first step, when the liquid extraction tube 100 is punctured and inserted into the human body, the main body 321 is inserted into the bottom of the lumen 213 of the tube body 210, the liquid extraction port closure 322 seals the inside of the lateral liquid extraction port 230, and the external protrusion 323 protrudes into the lateral liquid extraction port 230. By means of the above method, it is possible to avoid the situation where human tissue blocks the lateral liquid extraction port 230 during the puncture operation.

[0065] In the second step, when the cerebrospinal fluid is drawn using the collection tube 100, the piston body 320 moves upward along the cavity 213 of the tube body 210. At this moment, the collection port closure 322 drives the protrusion 323 to move upward, causing the protrusion 323 to undergo physical deformation. The protrusion 323 retracts into the cavity 213 and moves upward synchronously with the collection port closure 322. By means of the protrusion 323 retracting and moving upward, the piston body 320 can move in a way that maintains a tight fit with the cavity 213, making the suction force of the collection tube 100 to draw cerebrospinal fluid greater, thereby improving the suction efficiency.

[0066] In practical implementation, the quantitative extractor 310 also includes an extractor 330, which can operate manually or automatically. The technology of the extractor 330 is prior art, and is briefly described below. When the extractor 330 is used manually, it is a manual piston rod connected to the piston body 320. A dosage mark can be set on the tube body 210 to achieve quantitative extraction. When the extractor 330 is used automatically, it is a piston rod, one end of which is connected to the piston body 320, and the other end is connected to a motor, pneumatic, or hydraulic actuation unit. The actuation unit defines the rated travel distance of the piston rod to achieve quantitative extraction.

[0067] like Figure 8 As shown, the third step is to remove the entire collection tube 100 from the human body, seal the quantitative cerebrospinal fluid A1 in the collection tube 100, and transfer the collection tube 100 to the information collection laboratory.

[0068] The present invention achieves efficient collection and transfer of quantitative cerebrospinal fluid A1 through the third step, and can improve the efficiency of pollution-free sealing.

[0069] In practice, since the amount of cerebrospinal fluid required for information collection and testing is relatively small, the method of directly collecting and sealing the quantitative cerebrospinal fluid A1 in the collection tube 100 is sufficient. However, the existing technology of using a large number of catheters and containers will inevitably lead to unnecessary waste of cerebrospinal fluid.

[0070] As shown in Figures 9 to 16 the fourth step, the liquid taking tube 100 is converted into a cerebrospinal fluid releasing state.

[0071] The liquid taking tube 100 further comprises a breakage releasing structure 410, an external force F is applied on the breakage releasing structure 410, the external force F can make the breakage releasing structure 410 fall off from the liquid taking tube 100 and form a releasing opening 420 on the liquid taking tube 100, so that the liquid taking tube 100 is in the cerebrospinal fluid releasing state, and the fixed amount of cerebrospinal fluid A1 in the liquid taking tube 100 can overflow to the outside of the liquid taking tube 100 through the releasing opening 420 to perform the information collection action of the cerebrospinal fluid, and the breakage releasing structure 410 is arranged on the tube body 210 of the liquid taking tube 100.

[0072] In the specific implementation, there are various implementation manners to realize the function of the breakage releasing structure 410, which are described as follows.

[0073] As shown in Figures 9 to 10 the first implementation manner, the breakage releasing structure 410 comprises a breakable groove 510 arranged on the tube body 210 of the liquid taking tube 100, the breakable groove 510 is in communication with the lateral liquid taking opening 230 to form the breakage releasing structure 410, and the releasing opening 420 formed when the breakage releasing structure 410 falls off from the liquid taking tube 100 is an inclined opening.

[0074] In the specific implementation, the lateral inner cavity 250 has a force applying surface 511, the puncture point 241 is located at the lower end of the force applying surface 511, and the force applying surface 511 is located at the lower end of the lateral liquid taking opening 230.

[0075] As shown in Figures 11 to 12 in the specific implementation, the breakage releasing structure 410 can be folded down from the liquid taking tube 100 by a force applying tool 520, the force applying tool 520 comprises a force applying plate 521, a connecting ring plate 522 and a holding plate 523, wherein the connecting ring plate 522 is connected between the force applying plate 521 and the holding plate 523.

[0076] When the breakage releasing structure 410 is detached, the force applying plate 521 is pressed on the force applying surface 511, the holding plate 523 is placed on the liquid taking tube 100, and the external force F is applied on the force applying plate 521 to achieve the purpose of folding down the breakage releasing structure 410 from the liquid taking tube 100 along the breakable groove 510, in practice, the force applying tool 520 further comprises a force applying bump 524 arranged at the end of the force applying plate 521 to facilitate the user to apply the external force F on the force applying plate 521 and facilitate the force application.

[0077] As shown in Figure 13As shown in the embodiment two, the breakage releasing structure 410 includes a breakage groove 510, which is arranged around the tube body 210 of the liquid taking tube 100. The puncture part 220 and the lateral liquid taking port 230 are located below the breakage groove 510. When the breakage releasing structure 410 is detached from the liquid taking tube 100, the release port 420 is formed at the position of the breakage groove 510.

[0078] As shown in the embodiment three, the liquid taking tube 100' includes a tube body 210', a puncture part 220', and a lateral liquid taking port 230'. The puncture part 220' is movably arranged on the tube body 210'. The lateral liquid taking port 230' is arranged at a lateral position of the tube body 210' and is in communication with the lumen 213' of the tube body 210'. Figures 14 to 16

[0079] The puncture part 220' has a puncture head 240' and a plurality of sleeves 260'. The sleeves 260' are fixedly connected to the puncture head 240'. The puncture head 240' has a puncture point 241'. The puncture point 241' is located at the foremost end of the puncture head 240'.

[0080] In practice, when performing the puncture action, the puncture point 241' first contacts the human body. The puncture point 241' is mainly used to break the human tissue and perform the puncture action. The puncture point 241' is offset arranged on one side of the central axis 212' of the tube body 210'. The puncture point 241' has a vertical offset distance D1' from the central axis 212'.

[0081] The puncture point 241' is protruded below the lateral liquid taking port 230'. The puncture point 241' has a protruding height D2' from the tube wall 211' above the lateral liquid taking port 230'. The puncture head 240' covers the lateral liquid taking port 230' between the puncture head 240' and the tube body 210'. When performing the puncture action, the human tissue is broken by the puncture head 240' and the puncture action is performed. The human tissue does not directly contact the lateral liquid taking port 230', thereby avoiding the human tissue blocking the lateral liquid taking port 230' when performing the puncture action.

[0082] The puncture part 220' forms the breakage releasing structure 410. When the puncture part 220' is removed from the tube body 210', the lateral liquid taking port 230' forms the release port 420. The fixed amount of cerebrospinal fluid A1 in the liquid taking tube 100' can overflow to the outside of the liquid taking tube 100' through the lateral liquid taking port 230' to perform the information collection action of the cerebrospinal fluid.

[0083] As shown in the embodiment four, the liquid taking tube 100" includes a tube body 210", a puncture part 220", and a lateral liquid taking port 230". The puncture part 220" is movably arranged on the tube body 210". The lateral liquid taking port 230" is arranged at a lateral position of the tube body 210" and is in communication with the lumen 213" of the tube body 210". Figure 17 ​As shown, in the fifth step, the quantified cerebrospinal fluid A1 in the liquid taking tube 100 is quantitatively released for information collection of the cerebrospinal fluid.

[0084] The piston body 320 in the second step is moved as a whole along the tube cavity 213 of the tube body 210, and the quantified cerebrospinal fluid A1 in the liquid taking tube 100 is quantitatively released by the pushing force of the piston body 320, to obtain the released cerebrospinal fluid A2.

[0085] In practice, the released cerebrospinal fluid A2 can be placed in a container for testing, information collection, or other medical information collection actions.

Claims

1. A medical clinical cerebrospinal fluid drainage tube, characterized in that: The liquid taking tube comprises a tube body, a puncture part and a lateral liquid taking port, wherein the puncture part is arranged at the front end of the tube body, and the lateral liquid taking port is arranged at the lateral position of the puncture part, The puncture part has a puncture head and a lateral inner recess, wherein the lateral inner recess is located between the puncture head and the tube wall of the tube body, the lateral liquid taking port is arranged on the groove bottom surface of the lateral inner recess, and the lateral liquid taking port is communicated with the tube cavity of the tube body, The puncture head has a puncture point located at the most front end position of the puncture head, The puncture point is arranged on one side of the central axis of the tube body, and has a vertical offset distance with the central axis, The puncture point is protruded below the lateral liquid taking port, and has a protruding height between the puncture point and the tube wall above the lateral liquid taking port, and the puncture head covers the lateral liquid taking port between the puncture head and the tube body, The liquid taking tube further comprises a quantitative extractor, the quantitative extractor comprises a piston body made of elastic material, the piston body has a body, a liquid taking port closing body and an outer protruding body, wherein the liquid taking port closing body is arranged on one side of the body, and the outer protruding body is connected to the liquid taking port closing body, The liquid taking port closing body corresponds to the lateral liquid taking port, when the liquid taking tube is punctured and inserted into the human body, the body is inserted into the bottom of the tube cavity of the tube body, the liquid taking port closing body is closed inside the lateral liquid taking port, and the outer protruding body is protruded in the lateral liquid taking port, When the liquid taking tube is used to extract cerebrospinal fluid, the piston body is moved upward along the tube cavity of the tube body, at this moment, the liquid taking port closing body drives the outer protruding body to move upward, so that the outer protruding body is physically deformed, the outer protruding body is retracted into the tube cavity and synchronously moves upward with the liquid taking port closing body, The quantitative extractor further comprises an extractor, The liquid taking tube further comprises a damage release structure, an external force is applied on the damage release structure, the external force can make the damage release structure fall off from the liquid taking tube, and a release port is formed on the liquid taking tube, so that the liquid taking tube is in a cerebrospinal fluid releasing state, and the quantitative cerebrospinal fluid in the liquid taking tube can overflow to the outside of the liquid taking tube through the release port, The damage release structure is arranged on the tube body of the liquid taking tube, The damage release structure comprises a damage groove arranged on the tube body of the liquid taking tube, the damage groove is communicated with the lateral liquid taking port to form the damage release structure, and the release port formed when the damage release structure falls off from the liquid taking tube is an inclined opening, The lateral inner recess has a force applying surface, the puncture point is located at the lower end of the force applying surface, and the force applying surface is located at the lower end of the lateral liquid taking port, The break release structure can be folded down from the liquid taking tube by a force applying tool, the force applying tool comprising a force applying plate, a connecting ring plate and a top holding plate, wherein, The connecting ring plate is connected between the force applying plate and the top holding plate, When the damage release structure is disassembled, the force applying plate is pressed on the force applying surface, and the top holding plate is arranged on the liquid taking tube.

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