Lumbar anesthesia cerebrospinal fluid color-changing puncture needle for anesthesia

Abstract

The invention relates to the technical field of medical apparatus and instruments, in particular to a spinal anesthesia cerebrospinal fluid color-changing puncture needle for anesthesia, which at least comprises an input part used for rotatably regulating and controlling the angle of mounting an injector and forming two channels used for conveying anesthetics; the color developing part is used for assisting taking and arranged at the end of the input part, anesthetic flows into the color developing part through bidirectional impact of the input part, a puncture needle tube is arranged at the input end of the color developing part, a needle core is arranged in the puncture needle tube, and the color developing part is used for displaying when the puncture needle tube makes contact with cerebrospinal fluid. The purpose of rotationally regulating and controlling the angle of the injector is achieved by regulating and controlling the inclination angle of part of the structure through the input part, anesthetics collide with one another and are mixed doubly through other structures in the input part and the color developing part, the anesthesia effect is improved, and part of the structure of the color developing part makes contact with cerebrospinal fluid, so that the anesthetic effect is improved. And other structural colors in the color developing part are changed, so that puncture is facilitated, and pain of a patient is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a spinal anesthesia cerebrospinal fluid color-changing puncture needle used for anesthesia. Background Art

[0002] Spinal anesthesia is the injection of local anesthetics into the subarachnoid space. This cavity is located between the arachnoid membrane and the pia mater and is filled with cerebrospinal fluid. Since this cavity is connected to the ventricles, the anesthetic can block the conduction function of some spinal nerves, thereby causing an anesthetic effect in the corresponding innervated area. Spinal anesthesia is mainly suitable for abdominal or lower limb surgery, such as appendicitis, cesarean section, inguinal hernia repair, etc. In these surgeries, spinal anesthesia can provide effective analgesia and muscle relaxation effects, which helps the smooth progress of the operation.

[0003] At present, when using the existing puncture needle for spinal anesthesia, there are the following defects:

[0004] First, when medical staff hold a puncture needle to puncture the patient's waist and back, the angles formed between the puncture needle and the horizontal plane are different after the puncture needle is inserted into the patient's body. When the syringe injects the anesthetic into the subarachnoid space through the puncture needle, it is not easy for medical staff to insert the output end of the syringe into the input end of the puncture needle, which is inconvenient to operate.

[0005] Second, when doctors who lack puncture experience perform puncture, they are not sure where the tip of the puncture needle has reached, and therefore it is difficult to determine whether the puncture is successful, which results in a longer puncture time and greater pain for the patient.

[0006] Third, in some anesthesia situations, two or more anesthetics need to be mixed together to achieve a better anesthetic effect. After the anesthetic is inhaled into the syringe, it is no longer flowing, which may lead to insufficient mixing of the anesthetic and reduce the anesthetic effect. Summary of the invention

[0007] The purpose of the present invention is to provide a spinal anesthesia cerebrospinal fluid color-changing puncture needle for anesthesia, which achieves the purpose of flexibly changing the angle of the puncture needle input end by regulating the inclination angle of some structures therein through the input part itself, and the color of other structures in the color-developing part is caused to change when the color developing part contacts the cerebrospinal fluid, which is beneficial to reducing the patient's pain, and the "U-shape" is formed by the liquid guide shell, so that the two anesthetics are further mixed when they collide with each other, thereby improving the anesthetic effect.

[0008] To achieve the above object, a spinal anesthesia cerebrospinal fluid color-changing puncture needle for anesthesia at least comprises:

[0009] An input portion, the input portion is used to rotate and adjust the angle of the installed syringe and form a double channel for delivering anesthetics;

[0010] The color display part is used to assist in taking, and the color display part is arranged at the end of the input part. The anesthetic flows into the color display part through the bidirectional impact of the input part, and a puncture needle tube is provided at the input end of the color display part, and a needle core is provided inside the puncture needle tube. The color display part is used to display when the puncture needle tube contacts the cerebrospinal fluid.

[0011] As a further improvement of the present technical solution, the input part includes a liquid guide shell, and liquid guide tubes are symmetrically rotated on both sides of the inner wall of the liquid guide shell. A liquid inlet block is fixed between the two liquid guide tubes, and a first liquid inlet hole is opened at the bottom of the liquid inlet block. Second liquid inlet holes connected to the liquid guide tubes are symmetrically opened on both sides of the first liquid inlet hole.

[0012] As a further improvement of the present technical solution, a U-shaped cavity is provided inside the liquid guiding shell, and the U-shaped cavity is connected to the end of the liquid guiding tube, a liquid outlet tube connected to the U-shaped cavity is provided at the top of the liquid guiding shell, and an elastic rope connected to the color developing part is fixedly provided on one side of the liquid guiding shell, and the U-shaped cavity is used for the bidirectional flow of anesthetic.

[0013] As a further improvement of the technical solution, fixed shafts are symmetrically fixed at both ends of one side of the liquid inlet block, and an elastic limiting piece in contact with one side of the inner wall of the liquid guide shell is fixed on the surface of the fixed shaft. The elastic limiting piece is used to limit the liquid inlet block.

[0014] Preferably, a plurality of anti-slip grooves are provided on one side of the elastic limiting plate, and the anti-slip grooves are used to increase the friction between the elastic limiting plate and the liquid guiding shell.

[0015] As a further improvement of the present technical solution, the color display part includes an auxiliary block, a first infusion hole fixedly matched with the surface of the puncture needle tube is provided inside the auxiliary block, a flexible block fixedly matched with one end of the elastic rope is fixedly provided on one side of the auxiliary block, a second infusion hole connected with the liquid outlet tube is provided inside the flexible block, the first infusion hole and the second infusion hole are connected to each other, and a plurality of protrusions are symmetrically fixed on both sides of the flexible block.

[0016] As a further improvement of the present technical solution, a mounting groove is provided on the top of the auxiliary block, and slide grooves are symmetrically provided on both sides of the mounting groove. An insert is slidably provided inside the slide groove, an observation cover is fixed between the two inserts, a test paper is clamped between the observation cover and the mounting groove, and a water-absorbent fiber thread is fixed at the bottom of the mounting groove, and one end of the water-absorbent fiber thread passes through the auxiliary block and the puncture needle tube and is connected to the output end of the puncture needle tube.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the spinal anesthesia cerebrospinal fluid color-changing puncture needle used for anesthesia, the inclination angle of the partial structure is adjusted by the input part itself, so as to achieve the purpose of rotating and adjusting the angle of the installed syringe, and the anesthetics are caused to collide with each other through the input part and other structures in the color development part, and double mixing is performed to improve the anesthetic effect, and a part of the structure of the color development part is in contact with the cerebrospinal fluid, which causes the color of other structures in the color development part to change, which is convenient for puncture and helps to reduce the pain of patients;

[0019] 2. In the spinal anesthesia cerebrospinal fluid color-changing puncture needle used for anesthesia, the cerebrospinal fluid is absorbed by the water-absorbing fiber thread, and the cerebrospinal fluid flows along the water-absorbing fiber thread into the installation groove, causing the test paper to change color. Medical staff can clearly know the position where the tip of the puncture needle tube has reached, and it is easy to judge that the puncture has been successful, thereby reducing the puncture time and alleviating the patient's pain;

[0020] 3. In the spinal anesthesia cerebrospinal fluid color-changing puncture needle used for anesthesia, by rotating the liquid inlet block, the angle between the liquid inlet block and the liquid guide shell is changed, so that medical staff can insert the syringe into the first liquid inlet hole. The operation is convenient, and the anesthetic flows through the U-shaped cavity of the liquid guide shell. The anesthetic is divided into two streams. The two streams of anesthetic continue to flow along the U-shaped trajectory in the U-shaped cavity of the liquid guide shell, meet and collide at the liquid outlet pipe, and are initially mixed. Then, by squeezing the two sides of the flexible block, the anesthetic is mixed for the second time, thereby achieving the purpose of double mixing and improving the anesthetic effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall external first-view structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall external second viewing angle structure of the present invention;

[0023] Figure 3 A cross-sectional view of the present invention as a whole;

[0024] Figure 4 It is a schematic diagram of the external structure of the input part of the present invention;

[0025] Figure 5 It is a schematic diagram of the color developing part structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the connection structure after the input part and the color display part of the present invention are mutually engaged;

[0027] Figure 7 is a schematic cross-sectional structural diagram of an input portion of the present invention;

[0028] Figure 8 It is a schematic diagram of the connection structure between the fixed shaft and the elastic limiting piece of the present invention;

[0029] Fig. 9It is a schematic diagram of the connection structure between the insert and the observation cover of the present invention;

[0030] Fig.10 It is a schematic diagram of the structure of the liquid inlet block of the present invention after rotation from a first viewing angle;

[0031] Fig.11 It is a second viewing angle structural schematic diagram of the liquid inlet block of the present invention after rotation;

[0032] Fig.12 For the present invention Figure 3 A magnified view of the structure at center A;

[0033] Fig.13 For the present invention Figure 3 A magnified view of the structure at B in the middle.

[0034] The meaning of each number in the figure is:

[0035] 1. Input part; 11. Liquid guide shell; 12. Liquid guide tube; 13. Liquid inlet block; 14. Fixed axis; 15. Liquid outlet tube; 16. Elastic limit plate; 17. Elastic rope; 2. Color development part; 21. Flexible block; 22. Auxiliary block; 23. Insert; 24. Observation cover; 25. Test paper; 26. Water-absorbing fiber; 3. Puncture needle tube; 4. Needle core. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0037] It is not easy for medical staff to insert the output end of the syringe into the input end of the puncture needle, which makes the operation inconvenient; when doctors who lack puncture experience perform puncture, it is difficult to judge whether the puncture is successful; after the anesthetic is sucked into the syringe, it is in a state of no longer flowing, which may lead to insufficient mixing of the anesthetic.

[0038] To this end, the present invention provides a spinal anesthesia cerebrospinal fluid color-changing puncture needle for anesthesia, comprising at least:

[0039] Input part 1, which is used to rotate and adjust the angle of the installed syringe and form a double channel for delivering anesthetics;

[0040] A color display unit 2 for assisting in taking, the color display unit 2 is arranged at the end of the input unit 1, the anesthetic flows into the color display unit 2 through the bidirectional impact of the input unit 1, and a puncture needle tube 3 is arranged at the input end of the color display unit 2, and a needle core 4 is arranged inside the puncture needle tube 3, and the color display unit 2 is used to display when the puncture needle tube 3 contacts the cerebrospinal fluid;

[0041] The present invention Figure 1-3 As shown, considering that after the medical staff punctures, the angles between the puncture needle and the horizontal plane are different, when the syringe injects the anesthetic into the human body through the puncture needle, it is not easy to insert the output end of the syringe into the input end of the puncture needle, and the operation is inconvenient. Therefore, Figure 10-11 As shown, the input part 1 itself adjusts the tilt angle of some structures therein, so as to achieve the purpose of changing and flexibly adjusting the angle of the puncture needle input end, which is conducive to improving the convenience of operation;

[0042] Moreover, since many doctors lack puncture experience, they are not clear about the position of the tip of the puncture needle tube 3 during puncture, and it is difficult to judge whether the puncture is successful, which leads to a long time for puncture and increases the pain of patients. Figure 5 and Figure 12-13 As shown, the color developing part 2 is in contact with the cerebrospinal fluid in the subarachnoid space. If part of the structure of the color developing part 2 is in contact with the cerebrospinal fluid, the cerebrospinal fluid will cause the color of other structures in the color developing part 2 to change, so that it can be known that the tip of the puncture needle tube 3 has pierced the subarachnoid space and reached the inside of the subarachnoid space. At this time, the puncture is completed, which is helpful to reduce the pain of the patient;

[0043] In some cases, two or more anesthetics need to be mixed together. After the anesthetic is sucked into the syringe, it will no longer flow, which may lead to insufficient mixing of the anesthetics and reduce the anesthetic effect. Figure 6-7 , a "U-shape" is formed through other structures of the input part 1, so that the anesthetic entering the input part 1 is first divided into two flows, and then collides with each other and mixes together. When the two anesthetics collide with each other, they are further mixed to enhance the anesthetic effect.

[0044] On the basis of the above, the specific structure is disclosed in detail:

[0045] To realize that the input part 1 can rotate and adjust the angle of the installed syringe, the specific structure of the input part 1 must be disclosed. Figure 4 As shown, the input part 1 includes a liquid guiding shell 11, and liquid guiding tubes 12 are symmetrically rotated on both sides of the inner wall of the liquid guiding shell 11, a liquid inlet block 13 is fixedly arranged between the two liquid guiding tubes 12, a first liquid inlet hole is opened at the bottom of the liquid inlet block 13, and second liquid inlet holes connected with the liquid guiding tubes 12 are symmetrically opened on both sides of the first liquid inlet hole. By rotating the liquid inlet block 13 with the axis of the liquid guiding tube 12 as the axis, the angle of the first liquid inlet hole is changed, so as to achieve the purpose of rotating and controlling the angle of the installed syringe.

[0046] Considering that the input part 1 forms a double channel for delivering anesthetic, the specific structure of the liquid guide housing 11 will continue to be disclosed. Figure 4 and Figure 7As shown, a U-shaped cavity is provided inside the liquid guiding shell 11, and the U-shaped cavity is connected to the end of the liquid guiding tube 12, a liquid outlet tube 15 connected to the U-shaped cavity is provided on the top of the liquid guiding shell 11, and an elastic rope 17 connected to the color developing part 2 is fixedly provided on one side of the liquid guiding shell 11, and the U-shaped cavity is used for the bidirectional flow of anesthetics. Through the setting of the U-shaped cavity, the input end of the syringe is inserted into the first liquid inlet hole, and the anesthetic is injected into the first liquid inlet hole. One stream of anesthetic flows through the two second liquid inlet holes to form two streams of anesthetics. The two anesthetics flow through the liquid guiding tube 12 respectively and enter the two ends of the U-shaped cavity. The two streams of anesthetics flow in both directions along the channels on both sides of the U-shaped cavity, and collide and mix at the liquid outlet tube 15, so as to improve the mixing uniformity of the anesthetics and enhance the anesthetic effect, and the liquid guiding shell 11 and other structures are fixed below the color developing part 2 by the elastic rope 17.

[0047] Considering that after the liquid inlet block 13 rotates, the angle of the first liquid inlet hole changes, other structures are needed to limit the liquid inlet block 13 to prevent the liquid inlet block 13 from shaking, and it is necessary to continue to disclose the specific structure of the input part 1. Figure 4 and Figure 8 As shown, fixed shafts 14 are symmetrically fixed at both ends of one side of the liquid inlet block 13, and an elastic limiting piece 16 in contact with one side of the inner wall of the liquid guide shell 11 is fixed on the surface of the fixed shaft 14. The elastic limiting piece 16 is used to limit the liquid inlet block 13. By pinching the two elastic limiting pieces 16, the elastic limiting pieces 16 leave the surface of the liquid guide shell 11, and then the liquid inlet block 13 is rotated up and down with the liquid guide tube 12 as the axis to change the angle between the liquid inlet block 13 and the liquid guide shell 11. After reaching a suitable angle, the elastic limiting piece 16 is released, and the ends of the two elastic limiting pieces 16 are against the inner side of the liquid guide shell 11 to limit the liquid inlet block 13 and prevent the liquid inlet block 13 from shaking, thereby facilitating the rotation and adjustment of the angle of the installed syringe and improving the convenience of the puncture operation.

[0048] Considering that after the anesthetic flows through the liquid guide shell 11, it also flows through the color development part 2 and the puncture needle tube 3 to enter the subarachnoid space of the human body, it is necessary to disclose the specific structure of the color development part 2. Figure 5 and Figure 12-13As shown, the color developing part 2 includes an auxiliary block 22, and a first infusion hole fixedly matched with the surface of the puncture needle tube 3 is provided inside the auxiliary block 22, and a flexible block 21 fixedly matched with one end of the elastic rope 17 is fixedly provided on one side of the auxiliary block 22, and a second infusion hole plugged and matched with the outlet tube 15 is provided inside the flexible block 21, and the first infusion hole and the second infusion hole are connected to each other, and a plurality of protrusions are symmetrically fixed on both sides of the flexible block 21. When preparing to inject anesthetic, the outlet tube 15 is inserted into the second infusion hole, and the anesthetic that collides and mixes through the liquid guide shell 11 flows through the second infusion hole. When the anesthetic flows through the second infusion hole, the medical staff can pinch the protrusions on both sides of the flexible block 21 with their hands, and continuously squeeze the flexible block 21, so that the anesthetic flowing through the flexible block 21 is further mixed, which is conducive to further improving the mixing degree of the anesthetic, and the anesthetic mixed multiple times flows through the puncture needle tube 3 into the subarachnoid space.

[0049] Considering that the color developing portion 2 needs to change color when in contact with the cerebrospinal fluid in order to determine whether the tip of the puncture needle tube 3 has reached the subarachnoid space, it is necessary to further disclose the specific structure of the color developing portion 2 in detail. Fig. 9 As shown, a mounting groove is provided on the top of the auxiliary block 22, and slide grooves are symmetrically provided on both sides of the mounting groove. An insert 23 is slidably provided inside the slide groove, and an observation cover 24 is fixedly provided between the two inserts 23. A test paper 25 is clamped between the observation cover 24 and the mounting groove. The test paper 25 is made of PH test paper, and cerebrospinal fluid is generally weakly alkaline. If the test paper 25 comes into contact with the cerebrospinal fluid, the cerebrospinal fluid will cause the test paper 25 to change color. A water-absorbing fiber filament 26 is fixedly provided at the bottom of the mounting groove. The water-absorbing fiber filament 26 is made of water-absorbing materials such as bamboo fiber. The bamboo fiber has natural water absorption, and the micropores and grooves in its fiber structure help to absorb liquids such as water. One end of the water-absorbing fiber filament 26 passes through the auxiliary block 22 and The puncture needle tube 3 is connected to the output end of the puncture needle tube 3, and the puncture needle tube 3 is continuously inserted into the human body. When the tip of the puncture needle tube 3 passes through the arachnoid membrane and reaches the subarachnoid space, the absorbent fiber filament 26 absorbs cerebrospinal fluid, and the cerebrospinal fluid flows along the absorbent fiber filament 26 to the mounting groove. After the test paper 25 in the mounting groove continues to absorb the cerebrospinal fluid, the test paper 25 changes color. By observing the test paper 25 from the outside of the observation cover 24, it can be known that the tip of the puncture needle tube 3 has entered the subarachnoid space at this time, and the puncture is completed. There is no need to continue pushing the puncture needle tube 3, which is beneficial to reducing the patient's pain. When the test paper 25 needs to be replaced, the observation cover 24 is removed, the insert 23 slides out of the slide groove, and the discolored test paper 25 is replaced.

[0050] In order to make the liquid inlet block 13 less likely to shake after being limited, a plurality of anti-skid grooves are provided on one side of the elastic limiting piece 16 , and the anti-skid grooves are used to increase the friction between the elastic limiting piece 16 and the liquid guiding shell 11 .

[0051] Working principle: when the medical staff anesthetizes the patient and needs to use the puncture needle to puncture the patient's waist and back, first disinfect the puncture site and other preparatory work. These preparations are existing technologies and will not be repeated. The medical staff holds the auxiliary block 22 and slowly applies force to pierce the puncture needle tube 3 into the human body. The puncture needle tube 3 continues to enter the human body. The medical staff always observes whether the test paper 25 in the cover 24 changes color. If the test paper 25 changes color, it means that the tip of the puncture needle tube 3 has passed through the arachnoid membrane and entered the subarachnoid space. Because the cerebrospinal fluid in the subarachnoid space is absorbed by the absorbent fiber filaments 26, the cerebrospinal fluid flows along the absorbent fiber filaments 26 to the installation groove and is absorbed by the test paper 25, causing the test paper 25 to change color. At this time, it means that the puncture is completed, the puncture operation can be stopped, the needle core 4 is pulled out, and the outlet tube 15 is inserted into the second infusion hole;

[0052] At this time, if the direction of the first liquid inlet hole needs to be adjusted to facilitate the insertion of the syringe, the medical staff needs to pinch the elastic limiting piece 16 to make the elastic limiting piece 16 leave the surface of the liquid guide shell 11, and then rotate the liquid inlet block 13 up and down with the liquid guide tube 12 as the axis to change the angle between the liquid inlet block 13 and the liquid guide shell 11. After reaching a suitable angle, release the elastic limiting piece 16 to limit the liquid inlet block 13;

[0053] Furthermore, it is necessary to inject anesthetic into the subarachnoid space for spinal anesthesia. The output end of the syringe filled with anesthetic is inserted into the first liquid inlet hole, the syringe is pushed, and the anesthetic is injected into the liquid inlet block 13. After the anesthetic is injected into the first liquid inlet hole of the liquid inlet block 13, the anesthetic is divided into two streams. The two streams of anesthetic flow through the two second liquid inlets respectively into the liquid guide tube 12, and then enter the two ends of the interior of the liquid guide shell 11 through the liquid guide tube 12. The two streams of anesthetic continue to flow along a U-shaped trajectory inside the liquid guide shell 11, meet and collide at the liquid outlet tube 15, and the mixed anesthetic enters the puncture needle tube 3 through the first infusion hole and the second infusion hole. The medical staff can pinch the two side protrusions of the flexible block 21 by hand and continuously squeeze the flexible block 21. The anesthetic finally flows out from the output end of the puncture needle tube 3 and enters the subarachnoid space to complete the spinal anesthesia.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A spinal anesthesia cerebrospinal fluid color-changing puncture needle for anesthesia, characterized in that: At least: An input part (1), the input part (1) is used to rotate and adjust the angle of the installed syringe and form a double channel for delivering anesthetics; A color display section (2) for assisting in taking, the color display section (2) being arranged at the end of the input section (1), the anesthetic agent flows into the color display section (2) through the input section (1) in a bidirectional impact manner, and a puncture needle tube (3) is provided at the input end of the color display section (2), a needle core (4) is provided inside the puncture needle tube (3), and the color display section (2) is used to display when the puncture needle tube (3) contacts cerebrospinal fluid.

2. The spinal anesthesia cerebrospinal fluid color-changing puncture needle for anesthesia according to claim 1, characterized in that: The input part (1) comprises a liquid guide shell (11), liquid guide tubes (12) are symmetrically rotated on the center of the inner wall of the liquid guide shell (11), a liquid inlet block (13) is fixedly arranged between the two liquid guide tubes (12), a first liquid inlet hole is arranged at the bottom of the liquid inlet block (13), and second liquid inlet holes connected to the liquid guide tubes (12) are symmetrically arranged on both sides of the first liquid inlet hole.

3. The spinal anesthesia cerebrospinal fluid color-changing puncture needle for anesthesia according to claim 2, characterized in that: A U-shaped cavity is provided inside the liquid guiding shell (11), and the U-shaped cavity is connected to the end of the liquid guiding tube (12). A liquid outlet tube (15) connected to the U-shaped cavity is provided at the top of the liquid guiding shell (11), and an elastic rope (17) connected to the color developing part (2) is fixedly provided on one side of the liquid guiding shell (11). The U-shaped cavity is used for the bidirectional flow of anesthetic.

4. The spinal anesthesia cerebrospinal fluid color-changing puncture needle for anesthesia according to claim 2, characterized in that: A fixed shaft (14) is symmetrically fixed at both ends of one side of the liquid inlet block (13), and an elastic limiting piece (16) in contact with one side of the inner wall of the liquid guide shell (11) is fixed on the surface of the fixed shaft (14), and the elastic limiting piece (16) is used to limit the position of the liquid inlet block (13).

5. The spinal anesthesia cerebrospinal fluid color-changing puncture needle for anesthesia according to claim 3, characterized in that: The color development part (2) includes an auxiliary block (22), a first infusion hole is provided through the auxiliary block (22) and fixedly matched with the surface of the puncture needle tube (3), a flexible block (21) is fixedly provided on one side of the auxiliary block (22) and fixedly matched with one end of the elastic rope (17), a second infusion hole is provided through the flexible block (21) and plugged with the liquid outlet tube (15), and the first infusion hole and the second infusion hole are connected to each other, and a plurality of protrusions are symmetrically fixed on both sides of the flexible block (21).

6. The spinal anesthesia cerebrospinal fluid color-changing puncture needle for anesthesia according to claim 5, characterized in that: The auxiliary block (22) is provided with a mounting groove at the top, and slide grooves are symmetrically provided on both sides of the mounting groove. An insert (23) is slidably provided inside the slide groove, an observation cover (24) is fixedly provided between the two inserts (23), a test paper (25) is clamped between the observation cover (24) and the mounting groove, and a water-absorbing fiber thread (26) is fixedly provided at the bottom of the mounting groove, and one end of the water-absorbing fiber thread (26) passes through the auxiliary block (22) and the puncture needle tube (3) and is connected to the output end of the puncture needle tube (3).

7. The spinal anesthesia cerebrospinal fluid color-changing puncture needle for anesthesia according to claim 4, characterized in that: A plurality of anti-slip grooves are provided on one side of the elastic limiting plate (16), and the anti-slip grooves are used to increase the friction between the elastic limiting plate (16) and the liquid guiding shell (11).

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