Subarachnoid space puncture needle with temperature-sensitive developing tail end

Abstract

The invention relates to the technical field of puncture needles, in particular to a subarachnoid space puncture needle with a temperature-sensitive developing tail end. Comprising a needle base body, an epidural puncture needle is fixedly connected to the inner wall of the needle base body, a subarachnoid space puncture needle is arranged on the inner wall of the epidural puncture needle, a needle tail color developing assembly is arranged at the top of the needle base body, and the subarachnoid space puncture needle is used for transmitting cerebrospinal fluid to an inner cavity of the needle tail color developing assembly. An electron transfer type organic compound is arranged at the position, bearing cerebrospinal fluid, of the inner cavity of the needle tail color developing assembly. The electron transfer type organic compound is arranged in the spiral connecting piece, cerebrospinal fluid can flow along the path of the spiral connecting piece after entering the collecting funnel, the contact area of the cerebrospinal fluid and the electron transfer type organic compound is increased, the contact time of the cerebrospinal fluid and the electron transfer type organic compound is prolonged, and therefore the color of the electron transfer type organic compound is changed.

Description

Technical Field

[0001] The invention relates to the technical field of puncture needles, in particular to a subarachnoid space puncture needle with a temperature-sensitive color-developing tail end. Background Art

[0002] The subarachnoid space refers to a gap between the pia mater and the arachnoid membrane outside the brain and spinal cord. It is filled with cerebrospinal fluid, which plays many important roles in buffering, protecting, and nourishing the brain and spinal cord. One of the main uses of a subarachnoid puncture needle is to obtain a cerebrospinal fluid sample. The cerebrospinal fluid can be extracted by entering the subarachnoid space through the puncture needle, and a variety of tests can be performed on the properties of the cerebrospinal fluid. In some cases, such as acute hydrocephalus or a sharp increase in intracranial pressure leading to the risk of brain herniation, an appropriate amount of cerebrospinal fluid can be slowly released through the subarachnoid puncture needle, thereby reducing intracranial pressure and alleviating symptoms. In related technologies, for example, Chinese patent publication number CN118576285A discloses an intraspinal puncture needle.

[0003] During the combined spinal-epidural block operation, when the existing arachnoid puncture needle punctures the subarachnoid space, cerebrospinal fluid will flow back from the needle tube. Since the tail end of the needle is transparent and the cerebrospinal fluid is also transparent, we often need to get close and observe carefully to determine whether the cerebrospinal fluid has flowed back, and sometimes it is even difficult to make an accurate judgment. Summary of the invention

[0004] The object of the present invention is to provide a subarachnoid puncture needle with a temperature-sensitive color-developing tail end to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, a subarachnoid puncture needle with a temperature-sensitive color development tail end is provided, which comprises a needle seat body, an epidural puncture needle is fixedly connected to the inner wall of the needle seat body, a subarachnoid puncture needle is arranged on the inner wall of the epidural puncture needle, and a needle tail color development component is arranged on the top of the needle seat body;

[0006] The subarachnoid puncture needle is used to transfer cerebrospinal fluid to the inner cavity of the needle tail color development component, wherein the position of the inner cavity of the needle tail color development component that carries the cerebrospinal fluid is provided with an electron transfer type organic compound, which can change color when it comes into contact with the cerebrospinal fluid and reaches the temperature of the cerebrospinal fluid;

[0007] A protective component is arranged on the surface of the needle tail color developing component, and the protective component is used to rotate the needle tail color developing component so as to make the cerebrospinal fluid fully contact with the electron transfer type organic compound.

[0008] As a further improvement of the technical solution, a through hole is opened on the top of the needle seat body, an epidural puncture needle is fixedly connected to the inner wall of the through hole, and the top of the epidural puncture needle is fixedly connected to the needle tail color development component.

[0009] As a further improvement of the technical solution, the needle tail color development component includes a support insulation sleeve fixedly connected to the top of the needle seat body, the bottom of the support insulation sleeve is fixedly connected to the top of the epidural puncture needle, the support insulation sleeve is provided with a collection funnel, and the top of the collection funnel is provided with a syringe interface;

[0010] The supporting insulation sleeve, the collecting funnel and the syringe interface are made of transparent PC material.

[0011] As a further improvement of the technical solution, the inner wall of the collecting funnel is fixedly connected with a spiral connector, and the inner cavity of the spiral connector is provided with an electron transfer type organic compound;

[0012] The spiral connector is made of transparent PC material.

[0013] As a further improvement of the technical solution, a rotating groove is provided on the top of the supporting insulation sleeve, a rotating frame is fixedly connected to the bottom of the collecting funnel, a rotating frame is rotatably connected to the inner wall of the rotating groove, a connecting frame is fixedly connected to the top of the collecting funnel, a connecting groove is provided on the bottom of the syringe interface, and the surface of the connecting frame rotates on the inner wall of the connecting groove;

[0014] The top of the support insulation sleeve is in active contact with the bottom of the collecting funnel, and the top of the collecting funnel is in active contact with the bottom of the syringe interface;

[0015] As a further improvement of the technical solution, the protection component includes a heat insulation frame fixedly connected to the surface of the collecting funnel, and two rotating handles are fixedly connected to the surface of the heat insulation frame.

[0016] As a further improvement of the technical solution, a protective sleeve is fixedly connected to the surface of the syringe interface, a retainer is fixedly connected to the outer surface of the protective sleeve, and an inner wall of the retainer is fixedly connected to the surface of the needle seat body.

[0017] As a further improvement of the technical solution, a needle sleeve is clamped at the bottom of the needle seat body, and the epidural puncture needle is located in the inner cavity of the needle sleeve.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the subarachnoid puncture needle with a temperature-sensitive color developing tail end, by arranging an electron transfer type organic compound inside the spiral connector, the cerebrospinal fluid can flow along the path of the spiral connector after entering the collecting funnel, thereby increasing the contact area and contact time between the cerebrospinal fluid and the electron transfer type organic compound, thereby causing the electron transfer type organic compound to change color.

[0020] 2. In the subarachnoid puncture needle with a temperature-sensitive color developing tail end, the heat-insulating frame drives the collecting funnel to rotate by manually rotating the rotating handle. At this time, the cerebrospinal fluid inside the collecting funnel will continue to flow along the path of the spiral connector, so that the electron transfer type organic compound that has not contacted the cerebrospinal fluid will contact it and flow through various parts of the spiral connector, causing the electron transfer type organic compound inside the spiral connector to change color, thereby avoiding local accumulation that may be caused by the natural flow of cerebrospinal fluid, and failing to make the spiral connector change color evenly, thereby affecting the operator's observation. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 It is a schematic diagram of the inner cavity structure of the collecting funnel of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the protection component of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the syringe interface of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the spiral connector of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the heat insulation frame of the present invention.

[0027] The meaning of each number in the figure is:

[0028] 100, needle seat body; 101, needle sleeve; 102, fixator; 110, epidural puncture needle; 120, subarachnoid puncture needle; 200, needle tail color development component; 300, protection component;

[0029] 210, support insulation sleeve; 2101, rotation groove;

[0030] 220, collecting funnel; 2201, spiral connector; 2202, rotating frame; 2203, connecting frame;

[0031] 230, syringe interface; 2301, protective cover; 2302, connection groove;

[0032] 310, heat insulation frame; 320, rotating handle; DETAILED DESCRIPTION

[0033] 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.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] When performing a combined spinal-epidural block, the epidural puncture must be completed first. The epidural puncture needle is inserted into the epidural space through the skin, subcutaneous tissue, supraspinous ligament, interspinous ligament and yellow ligament. Then, the arachnoid puncture needle is inserted through the inner cavity of the epidural puncture needle and the puncture continues forward to break through the dura mater and arachnoid membrane and enter the subarachnoid space. When the arachnoid puncture needle enters the subarachnoid space, cerebrospinal fluid will flow out, and the puncture is successful. For this reason, Figure 1-Figure 6 As shown, the present invention provides a subarachnoid space puncture needle with a temperature-sensitive color development tail end, which includes a needle seat body 100, an epidural puncture needle 110 is fixedly connected to the inner wall of the needle seat body 100, a subarachnoid space puncture needle 120 is arranged on the inner wall of the epidural puncture needle 110, and a needle tail color development component 200 is arranged on the top of the needle seat body 100;

[0037] The subarachnoid puncture needle 120 is used to transfer cerebrospinal fluid to the inner cavity of the needle tail color development component 200, wherein the position of the inner cavity of the needle tail color development component 200 that carries the cerebrospinal fluid is provided with an electron transfer type organic compound, which can change color when it contacts the cerebrospinal fluid and reaches the temperature of the cerebrospinal fluid;

[0038] A protective component 300 is disposed on the surface of the needle tail color developing component 200, and the protective component 300 is used to rotate the needle tail color developing component 200 so that the cerebrospinal fluid is fully in contact with the electron transfer type organic compound;

[0039] The reason why electron transfer organic compounds will show color when exposed to temperature is that temperature changes will affect the rate and degree of electron transfer in electron transfer organic compounds. At different temperatures, the transition energy and transfer probability of electrons in molecules are different. When the temperature rises, the molecules obtain more thermal energy, and electrons are more likely to transition from the ground state to the excited state, and the rate of electron transfer is accelerated, causing the absorption spectrum and emission spectrum of the molecules to change, thereby causing the color to change; conversely, when the temperature decreases, the electron transfer process slows down, and the color will change accordingly.

[0040] like Figure 1-3 , considering that the operator needs to rely on whether there is refluxed cerebrospinal fluid in the inner cavity of the needle tail color component 200 when observing whether the subarachnoid space puncture needle 120 is punctured successfully, but because the cerebrospinal fluid is transparent, the operator needs to get close to check whether there is refluxed cerebrospinal fluid in the inner cavity of the needle tail color component 200. If the subarachnoid space puncture needle 120 does not puncture the subarachnoid space, the operator needs to continue puncturing and repeat the above steps, which is more troublesome. The epidural puncture needle 110 is passed through the skin, subcutaneous tissue, supraspinous ligament, interspinous ligament and yellow ligament in turn by holding the needle tail color component 200, so that the epidural puncture needle 110 enters the epidural space, and then the subarachnoid space puncture needle 120 is inserted into the epidural space The puncture needle 110 is inserted into the inner cavity of the epidural puncture needle 110, and then the epidural puncture needle 110 is extended forward to break through the dura mater and the arachnoid mater. At this time, the subarachnoid puncture needle 120 enters the subarachnoid space. Since the subarachnoid space is filled with cerebrospinal fluid, under the action of the pressure difference, the cerebrospinal fluid will flow back to the inner cavity of the needle tail color development component 200 along the gap between the epidural puncture needle 110 and the subarachnoid puncture needle 120. Since the electron transfer type organic compound is provided in the position of the needle tail color development component 200 that carries the cerebrospinal fluid, the electron transfer type organic compound changes color when it contacts the temperature of the cerebrospinal fluid, so that the operator can observe conveniently without having to get close to repeatedly check whether the subarachnoid puncture needle 120 has reached the subarachnoid space.

[0041] Since the amount of cerebrospinal fluid entering the inner cavity of the needle tail color development component 200 is not much, at this time, the part of the compound that contacts the cerebrospinal fluid will change color, while the part that does not contact the cerebrospinal fluid will not change color. Since the area of ​​the needle tail color development component 200 that changes color is small, it is difficult for the operator to judge whether the needle tail color development component 200 has changed color when checking. Therefore, the needle tail color development component 200 can be rotated by rotating the protection component 300, so that the cerebrospinal fluid in the inner cavity of the needle tail color development component 200 is fully in contact with the electron transfer type organic compound, so that the electron transfer type organic compound is evenly colored, which is convenient for the operator to observe;

[0042] On the basis of the above, the specific structure is disclosed in detail:

[0043] like Figure 2 As shown, first, considering that the needle tail color display component 200 needs to receive the cerebrospinal fluid that flows back after the subarachnoid space puncture needle 120 punctures the skin, a through hole is opened on the top of the needle seat body 100, and the inner wall of the through hole is fixedly connected with the epidural puncture needle 110, and the top of the epidural puncture needle 110 is fixedly connected with the needle tail color display component 200. The subarachnoid space puncture needle 120 penetrates the inner wall of the epidural puncture needle 110 and extends out of the epidural puncture needle 110. After reaching the subarachnoid space, the cerebrospinal fluid will follow the gap between the subarachnoid space puncture needle 120 and the epidural puncture needle 110 to reach the inner cavity of the needle tail color display component 200, and the cerebrospinal fluid will be received by the needle tail color display component 200.

[0044] like Figure 5 As shown, in order to enable the needle tail color development component 200 to receive cerebrospinal fluid, it is necessary to further disclose the parts of the needle tail color development component 200. Therefore, the needle tail color development component 200 includes a support insulation sleeve 210 fixedly connected to the top of the needle seat body 100, the bottom of the support insulation sleeve 210 is fixedly connected to the top of the epidural puncture needle 110, and the support insulation sleeve 210 is provided with a collection funnel 220, and the top of the collection funnel 220 is provided with a syringe interface 230;

[0045] The supporting thermal insulation sleeve 210, the collecting funnel 220, and the syringe interface 230 are made of transparent PC material. The epidural puncture needle 110 is fixedly connected to the supporting thermal insulation sleeve 210, so that cerebrospinal fluid can flow along the inner cavity of the epidural puncture needle 110 to the inside of the supporting thermal insulation sleeve 210, and then reach the inner cavity of the collecting funnel 220 from the inner cavity of the supporting thermal insulation sleeve 210. Since the supporting thermal insulation sleeve 210, the collecting funnel 220, and the syringe interface 230 are transparent, the collecting funnel 220 can be easily checked by the operator when receiving the cerebrospinal fluid.

[0046] like Figure 2 In order to make the electron transfer type organic compound in the inner cavity of the collecting funnel 220 change color when the collecting funnel 220 receives the cerebrospinal fluid, so as to facilitate the operator to check, the inner wall of the collecting funnel 220 is fixedly connected with a spiral connector 2201, and the inner cavity of the spiral connector 2201 is provided with an electron transfer type organic compound;

[0047] The spiral connector 2201 is made of transparent PC material. The spiral structure in the spiral connector 2201 enables the cerebrospinal fluid to flow along the path of the spiral connector 2201 after entering the collecting funnel 220, thereby increasing the contact area and contact time between the cerebrospinal fluid and the electron transfer type organic compound, thereby ensuring that even if the cerebrospinal fluid flow rate is small or the flow rate is slow, the color change reaction can be triggered in time. Secondly, the transparent PC material of the collecting funnel 220 and the spiral connector 2201 allows the operator to view clearly and intuitively.

[0048] like Figure 6 As shown, in order to enable the protection component 300 to rotate the needle tail color development component 200, a rotating groove 2101 is opened on the top of the supporting insulation cover 210, a rotating frame 2202 is fixedly connected to the bottom of the collecting funnel 220, and the rotating frame 2202 is rotatably connected to the inner wall of the rotating groove 2101. A connecting frame 2203 is fixedly connected to the top of the collecting funnel 220, and a connecting groove 2302 is opened at the bottom of the syringe interface 230, and the surface of the connecting frame 2203 rotates on the inner wall of the connecting groove 2302;

[0049] The top of the supporting insulation sleeve 210 is in movably contact with the bottom of the collecting funnel 220, and the top of the collecting funnel 220 is in movably contact with the bottom of the syringe interface 230. The rotating frame 2202 is rotated on the inner wall of the rotating groove 2101 by rotating the protection component 300. At the same time, the connecting frame 2203 is rotated on the inner wall of the connecting groove 2302, so that the collecting funnel 220 can be rotated. The rotation of the collecting funnel 220 can make the cerebrospinal fluid in the inner cavity of the collecting funnel 220 move along the spiral path of the spiral connector 2201, thereby expanding the contact area with the spiral connector 2201. In this process, the cerebrospinal fluid is no longer limited to contacting only a local area of ​​the spiral connector 2201, but can flow through various parts of the spiral connector 2201 in sequence. As the cerebrospinal fluid contacts each part of the spiral connector 2201 one by one, the electron transfer type organic compound therein will change color synchronously, thereby overcoming the problem of local accumulation or uneven contact that may be caused by the natural flow of cerebrospinal fluid.

[0050] like Figure 1-2 As shown, in order to enable the protection component 300 to rotate the needle tail color development component 200, it is necessary to further disclose the parts of the protection component 300. Therefore, the protection component 300 includes a heat insulation frame 310 fixedly connected to the surface of the collecting funnel 220. Two rotating handles 320 are fixedly connected to the surface of the heat insulation frame 310. The heat insulation frame 310 drives the collecting funnel 220 to rotate by manually rotating the rotating handle 320. By arranging the heat insulation frame 310 on the surface of the collecting funnel 220, it can be prevented that when the rotating handle 320 is manually rotated, the temperature of the hand is prevented from being transferred to the inside of the collecting funnel 220, causing the color of the electron transfer type organic compound inside the spiral connector 2201 to change.

[0051] like Figure 6 As shown, in order to prevent the syringe interface 230 from moving during the rotation of the collecting funnel 220, a protective sleeve 2301 is fixedly connected to the surface of the syringe interface 230, and a fixture 102 is fixedly connected to the outer surface of the protective sleeve 2301. The inner wall of the fixture 102 is fixedly connected to the surface of the needle seat body 100. By setting the fixture 102 to fix it to the protective sleeve 2301, the syringe interface 230 can be fixed above the collecting funnel 220, so that when the collecting funnel 220 rotates, the syringe interface 230 will not move.

[0052] like Figure 1 As shown, in order to prevent the epidural puncture needle 110 from being contaminated when not in use, a needle sleeve 101 is clamped on the bottom of the needle seat body 100, and the epidural puncture needle 110 is located in the inner cavity of the needle sleeve 101. By arranging the needle sleeve 101 on the outer surface of the epidural puncture needle 110, the epidural puncture needle 110 can be prevented from being contaminated when not in use.

[0053] In summary, the overall working principle of the present invention is as follows:

[0054] The needle sheath 101 is moved to separate it from the needle holder body 100, and then the holder 102 is held to sequentially pass the epidural puncture needle 110 through the skin, subcutaneous tissue, supraspinous ligament, interspinous ligament and yellow ligament, so that the epidural puncture needle 110 enters the epidural space, and then the subarachnoid puncture needle 120 is inserted into the inner cavity of the epidural puncture needle 110, and then the epidural puncture needle 110 is continuously punctured forward to extend the epidural puncture needle 110, breaking through the dura mater and arachnoid mater. At this time, the subarachnoid puncture needle 120 is inserted into the epidural space. The cerebrospinal fluid will flow back into the support and insulation sleeve 210 through the gap between the epidural puncture needle 110 and the subarachnoid puncture needle 120 under the action of the pressure difference, and then reach the inner cavity of the collecting funnel 220 from the inner cavity of the support and insulation sleeve 210. At this time, the cerebrospinal fluid reaching the inner cavity of the collecting funnel 220 will first contact the spiral connector 2201, and then flow back along the path of the spiral connector 2201. Flow along the radial path. Since the inner cavity of the spiral connector 2201 is provided with an electron transfer type organic compound, the contact between the cerebrospinal fluid and the spiral connector 2201 will cause it to change color. Secondly, the transparent PC material of the collecting funnel 220 and the spiral connector 2201 allows the operator to view it clearly and intuitively. By manually turning the rotating handle 320 to make the insulation frame 310 drive the collecting funnel 220 to rotate, the cerebrospinal fluid in the inner cavity of the collecting funnel 220 moves along the spiral path of the spiral connector 2201, expanding the contact area with the spiral connector 2201. In this process, the cerebrospinal fluid is no longer limited to contacting only a local area of ​​the spiral connector 2201, but can flow through various parts of the spiral connector 2201 in turn. As the cerebrospinal fluid contacts each part of the spiral connector 2201 one by one, the electron transfer type organic compound therein will change color synchronously, and the operator can intuitively see that the cerebrospinal fluid has flowed back.

[0055] 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 subarachnoid space puncture needle with a temperature-sensitive color development tail end, comprising a needle seat body (100), an epidural puncture needle (110) is fixedly connected to the inner wall of the needle seat body (100), and a subarachnoid space puncture needle (120) is provided on the inner wall of the epidural puncture needle (110), characterized in that: A needle tail color developing component (200) is arranged on the top of the needle seat body (100); The subarachnoid puncture needle (120) is used to transfer cerebrospinal fluid to the inner cavity of the needle tail color development component (200), wherein an electron transfer type organic compound is provided at a position of the inner cavity of the needle tail color development component (200) that carries the cerebrospinal fluid, and the compound can change color when it comes into contact with the cerebrospinal fluid and reaches the temperature of the cerebrospinal fluid; A protective component (300) is provided on the surface of the needle tail color development component (200), and the protective component (300) is used to rotate the needle tail color development component (200) so that the cerebrospinal fluid is fully in contact with the electron transfer type organic compound.

2. The subarachnoid space puncture needle with a temperature-sensitive color developing tail end according to claim 1, characterized in that: A through hole is formed at the top of the needle seat body (100), an epidural puncture needle (110) is fixedly connected to the inner wall of the through hole, and the top of the epidural puncture needle (110) is fixedly connected to the needle tail color development component (200).

3. The subarachnoid space puncture needle with a temperature-sensitive color developing tail end according to claim 2, characterized in that: The needle tail color development component (200) includes a support insulation sleeve (210) fixedly connected to the top of the needle seat body (100), the bottom of the support insulation sleeve (210) is fixedly connected to the top of the epidural puncture needle (110), the support insulation sleeve (210) is provided with a collection funnel (220), and the top of the collection funnel (220) is provided with a syringe interface (230); The supporting heat-insulating sleeve (210), the collecting funnel (220) and the syringe interface (230) are made of transparent PC material.

4. The subarachnoid puncture needle with a temperature-sensitive color developing tail end according to claim 3, characterized in that: The inner wall of the collecting funnel (220) is fixedly connected with a spiral connector (2201), and the inner cavity of the spiral connector (2201) is provided with an electron transfer type organic compound; The spiral connector (2201) is made of transparent PC material.

5. The subarachnoid space puncture needle with a temperature-sensitive color developing tail end according to claim 3, characterized in that: The top of the supporting insulation sleeve (210) is provided with a rotating groove (2101), the bottom of the collecting funnel (220) is fixedly connected with a rotating frame (2202), the inner wall of the rotating groove (2101) is rotatably connected with the rotating frame (2202), the top of the collecting funnel (220) is fixedly connected with a connecting frame (2203), the bottom of the syringe interface (230) is provided with a connecting groove (2302), and the surface of the connecting frame (2203) rotates on the inner wall of the connecting groove (2302); The top of the supporting heat-insulating sleeve (210) is in active contact with the bottom of the collecting funnel (220), and the top of the collecting funnel (220) is in active contact with the bottom of the syringe interface (230).

6. The subarachnoid puncture needle with a temperature-sensitive color-developing tail end according to claim 5, characterized in that: The protection component (300) comprises a heat insulation frame (310) fixedly connected to the surface of the collecting funnel (220), and two rotating handles (320) are fixedly connected to the surface of the heat insulation frame (310).

7. The subarachnoid space puncture needle with a temperature-sensitive color development tail according to claim 5, characterized in that: A protective sleeve (2301) is fixedly connected to the surface of the syringe interface (230), a retainer (102) is fixedly connected to the outer surface of the protective sleeve (2301), and an inner wall of the retainer (102) is fixedly connected to the surface of the needle seat body (100).

8. The subarachnoid space puncture needle with a temperature-sensitive color development tail according to claim 7, characterized in that: A needle sleeve (101) is clamped on the bottom of the needle seat body (100), and the epidural puncture needle (110) is located in the inner cavity of the needle sleeve (101).

Images