A lumbar puncture assist mechanism and method of use

Abstract

The application discloses a lumbar puncture auxiliary mechanism and a use method thereof. The lumbar puncture auxiliary mechanism comprises a main body assembly, a supporting shell fixed to one side of a positioning disc, and a puncture needle penetrating through the positioning disc and the supporting shell. The main body assembly is provided with an adjusting assembly in the supporting shell. The adjusting assembly comprises a driving element arranged on one side of the positioning disc, a transmission element arranged on one side of the driving element, and an adjusting element arranged on one side of the transmission element. The adjusting element comprises a limiting shell fixed to the inner wall of the supporting shell, a rack sliding in the limiting shell, and a first spring fixed to the end of the rack. The adjusting assembly can intermittently supply the puncture needle, so that the puncture needle can smoothly break through the yellow ligament without improper force. The puncture process can be judged, so that the time when the puncture needle enters the epidural space and the subarachnoid space can be accurately grasped, and the accidental damage to the human body is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical assistive device technology, and in particular to a lumbar puncture assistive mechanism and its usage method. Background Technology

[0002] In modern medicine, lumbar puncture is a crucial diagnostic and treatment method, widely used in the diagnosis of central nervous system diseases, cerebrospinal fluid pressure measurement, and intrathecal drug injection. However, traditional lumbar puncture procedures face numerous challenges. During the puncture, the force and depth of the puncture are difficult to control. When breaking through the ligamentum flavum, doctors rely on experience to control the force, lacking a quantitative control mechanism, which can lead to improper force application. Too little force prevents the needle from successfully breaking through the ligamentum flavum, prolonging the operation time; too much force causes the needle to penetrate too deeply, damaging the spinal cord or other important tissues. Furthermore, there are deficiencies in judging the puncture progress. Currently, the location of the epidural space and subarachnoid space mainly relies on the doctor's subjective judgment, lacking objective detection and control devices. This makes it difficult to accurately grasp the timing of the needle entering the epidural space and subarachnoid space, resulting in a higher risk of puncture that is too deep or too shallow, leading to serious complications such as spinal cord injury, hemorrhage, and infection. Summary of the Invention

[0003] In view of the problems existing in the above-mentioned lumbar puncture auxiliary mechanisms and methods of use, the present invention is proposed.

[0004] Therefore, the problem that this invention aims to solve is that the safety and accuracy of existing lumbar puncture procedures are relatively low.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a lumbar puncture auxiliary mechanism, comprising a main body component including a positioning disc, a support shell fixed to one side of the positioning disc, and a puncture needle penetrating the positioning disc and the support shell;

[0006] An adjustment component, disposed within the support housing, includes a drive component disposed on one side of the positioning disk, a transmission component disposed on one side of the drive component, and an adjustment component disposed on one side of the transmission component. The adjustment component includes a limiting shell fixed to the inner wall of the support housing, a rack sliding within the limiting shell, a first spring fixed to the end of the rack, a positioning block fixed to one side of the rack, a threaded rod rotatably connected within the limiting shell, a knob fixed to the end of the threaded rod, and a stop block rotatably connected to the surface of the threaded rod via a thread.

[0007] As a preferred embodiment of the lumbar puncture auxiliary mechanism of the present invention, the adjustment component further includes a detection component disposed on one side of the adjustment component, including a connecting sleeve fixed to the surface of the support shell, a conduit inserted into the connecting sleeve, and an installation plug fixed at the other end of the conduit.

[0008] As a preferred embodiment of the lumbar puncture auxiliary mechanism of the present invention, the detection element further includes a connecting tube inserted into the connecting sleeve, an adjusting tube fixed on the surface of the connecting tube, a sliding sleeve sliding inside the adjusting tube, and a second spring provided inside the sliding sleeve.

[0009] As a preferred embodiment of the lumbar puncture auxiliary mechanism of the present invention, the adjustment component further includes a positioning element disposed on one side of the limiting shell, including a positioning shell fixed to one side of the limiting shell, a slider sliding inside the positioning shell, a third spring disposed inside the slider, a positioning groove being formed on the surface of the slider, an insert being fixed to the end of the sliding sleeve, a limiting block being fixed to one side of the slider, and a reset rod being fixed to one side of the slider.

[0010] In a preferred embodiment of the lumbar puncture auxiliary mechanism of the present invention, the driving component includes a support column fixed to one side of the positioning plate, a support shaft fixed inside the support column, a friction wheel rotatably connected to the surface of the support shaft, a support rod fixed to one side of the support column, and another support shaft sliding on the surface of the support rod, with a compression wheel rotatably connected to the surface of the support shaft.

[0011] As a preferred embodiment of the lumbar puncture auxiliary mechanism of the present invention, the driving component further includes a slide that slides on the surface of the support rod, a threaded column is rotatably connected to the slide by a thread, a rotating rod is fixed at one end of the threaded column, and a fastening wheel is fixed at the other end of the rotating rod.

[0012] As a preferred embodiment of the lumbar puncture auxiliary mechanism of the present invention, the transmission component includes a worm gear fixed to one side of the friction wheel, a worm is provided on one side of the worm gear, a support seat is fixed to one side of the positioning plate, a rotating column is rotatably connected inside the support seat, and the worm is fixed to the surface of the rotating column.

[0013] As a preferred embodiment of the lumbar puncture auxiliary mechanism of the present invention, the transmission component further includes a reversing disk fixed to the end of the rotating column, and a rotating gear is rotatably connected to the surface of the reversing disk, the rotating gear meshing with the rack.

[0014] As a preferred embodiment of the lumbar puncture auxiliary mechanism of the present invention, a drive rod is fixed on one side of the rack, and a positioning strip is fixed on one side of the support shell.

[0015] As a preferred embodiment of the method of using the lumbar puncture auxiliary mechanism of the present invention, the puncture point is first determined, the positioning plate is fixed to the patient's waist, and the puncture point is located at the through hole of the positioning plate, and the installation plug is inserted into the tail of the puncture needle.

[0016] The puncture needle is then inserted into the patient's body through the support shell and the positioning plate until it reaches the ligamentum flavum side;

[0017] At this time, rotate the fastening wheel to clamp the puncture needle, press the positioning bar with the right thumb, and repeatedly pull the drive rod to one side of the positioning bar with the index finger, so that the puncture needle is intermittently fed in;

[0018] When the reset rod moves, stop driving the drive rod, pull out the mounting plug, and reset the reset rod. Then, rotate the knob to adjust the drive rod to the appropriate scale.

[0019] Press the positioning bar again with your right thumb, and repeatedly pull the drive rod with your index finger until cerebrospinal fluid flows out from the tail of the puncture needle.

[0020] The beneficial effects of this invention are: by setting the adjustment component, the puncture needle can be intermittently supplied, so that the puncture needle can smoothly penetrate the ligamentum flavum without causing improper force.

[0021] It allows for the assessment of the puncture process, enabling precise control over the timing of the needle's entry into the epidural and subarachnoid spaces, thereby reducing the risk of accidental injury to the human body. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0023] Figure 1 This is a structural diagram of the lumbar puncture auxiliary mechanism and its usage.

[0024] Figure 2 A cross-sectional view of the support shell for the lumbar puncture auxiliary mechanism and its usage.

[0025] Figure 3 A side view of the support shell structure for the lumbar puncture auxiliary mechanism and its usage.

[0026] Figure 4 Lumbar puncture auxiliary mechanisms and their usage Figure 3 Sectional view of the structure at point AA.

[0027] Figure 5 This is a diagram of the connecting tube structure for lumbar puncture auxiliary mechanisms and their usage.

[0028] Figure 6 A cross-sectional view of the abutment structure for lumbar puncture auxiliary mechanism and its usage.

[0029] Figure 7 A cross-sectional view of the positioning shell for the lumbar puncture auxiliary mechanism and its usage.

[0030] Figure 8 A cross-sectional view of the rotating column, which is used as an auxiliary mechanism for lumbar puncture and its application.

[0031] In the figure: Main component 100; Positioning plate 101; Support shell 102; Adjustment component 200; Drive component 201; Transmission component 202; Adjustment component 203; Limiting shell 203a; Rack 203b; First spring 203c; Positioning block 203d; Threaded rod 203e; Knob 203f; Abutment block 203g; Detection component 204; Connecting sleeve 204a; Conduit 204b; Mounting plug 204c; Connecting pipe 204d; Adjusting pipe 204e; Sliding sleeve 204f; Second spring 204g; Positioning component 205; Positioning shell 205a ; slider 205b; third spring 205c; positioning groove 205b-1; insert block 204h; limit block 205d; reset rod 205e; support column 201a; support shaft 201b; friction wheel 201c; support rod 201d; extrusion wheel 201e; carriage 201f; threaded column 201g; rotating rod 201h; fastening wheel 201i; worm gear 202a; worm 202b; support seat 202c; rotating column 202d; reversing disc 202e; rotating gear 202f; drive rod 203h; positioning bar 203i. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example 1, referring to Figures 1-4This is the first embodiment of the present invention. This embodiment provides a lumbar puncture auxiliary mechanism. The lumbar puncture auxiliary mechanism includes a main body component 100, including a positioning plate 101 and a support shell 102 fixed to one side of the positioning plate 101. The puncture needle passes through the positioning plate 101 and the support shell 102. The middle part of the positioning plate 101 and the support shell 102 are provided with through holes, so that the puncture needle can pass through the through holes. The through holes of the positioning plate 101 and the support shell 102 allow the puncture needle to enter the patient's body vertically when the positioning plate 101 is in contact with the patient's waist.

[0036] When performing routine procedures such as cerebrospinal fluid collection and pressure measurement, the puncture needle is usually held perpendicular to the patient's back skin, with the L3-4 or L4-5 intervertebral space as the puncture point. The vertical insertion allows the puncture needle to pass smoothly through the skin, subcutaneous tissue, supraspinous ligament, interspinous ligament, and ligamentum flavum, and enter the epidural space and subarachnoid space to obtain a cerebrospinal fluid sample.

[0037] The epidural space is a narrow gap between the periosteum of the spinal canal and the dura mater. It is filled with fat, the internal vertebral venous plexus, and lymphatic vessels, and the spinal nerve roots and their accompanying blood vessels pass through it. The pressure is negative, lower than normal atmospheric pressure.

[0038] In actual use, the doctor first disinfects the patient's waist, then determines the puncture point and marks it with a sterile marker, so that the positioning disc 101 is fixed to the patient's waist with medical adhesive, and the through hole of the positioning disc 101 is located at the position marked by the sterile marker.

[0039] An adjustment component 200, disposed within the support housing 102, includes a drive member 201 disposed on one side of the positioning disk 101, a transmission member 202 disposed on one side of the drive member 201, the transmission member 202 being in contact with the surface of the puncture needle for driving the puncture needle to move, and an adjustment member 203 disposed on one side of the transmission member 202, the adjustment member 203 being used to drive the transmission member 202 to move and to limit the transmission member 202. When the adjustment member 203 is not working, the transmission member 202 cannot drive the puncture needle to move, and when the puncture needle is clamped by the transmission member 202, the puncture needle cannot actively move into or out of the body. The adjustment member 203 includes a limiting shell 203a fixed to the inner wall of the support housing 102, and a rack 203b sliding within the limiting shell 203a. Through the limiting of the limiting shell 203a, the rack 203b can slide stably. A first spring 203c is fixed to the end of rack 203b, and the first spring 203c is in a compressed state. A positioning block 203d is fixed to one side of rack 203b. A threaded rod 203e is rotatably connected inside the limiting shell 203a. A knob 203f is fixed to the end of threaded rod 203e. A stop block 203g is rotatably connected to the surface of threaded rod 203e through a thread. A through hole is opened on the positioning block 203d, so that threaded rod 203e can pass through positioning block 203d without contacting positioning block 203d. Rotating knob 203f can drive threaded rod 203e to rotate, thereby driving the stop block 203g to move. This causes the stop block 203g to drive positioning block 203d to move, thereby causing positioning block 203d to drive rack 203b to move, thus adjusting the initial position of rack 203b.

[0040] Specifically, the adjustment assembly 200 also includes a detection component 204 disposed on one side of the adjustment member 203, including a connecting sleeve 204a fixed to the surface of the support shell 102, a conduit 204b inserted into the connecting sleeve 204a, and an installation plug 204c fixed to the other end of the conduit 204b. The installation plug 204c is inserted into the tail of the puncture needle, and the conduit 204b and the puncture needle are connected by the installation plug 204c.

[0041] Specifically, the detection component 204 also includes a connecting tube 204d inserted into the connecting sleeve 204a. An adjusting tube 204e is fixed on the surface of the connecting tube 204d. The connecting tube 204d is used to connect the adjusting tube 204e and the catheter 204b, thereby indirectly connecting with the puncture needle. A sliding sleeve 204f slides inside the adjusting tube 204e. The connection between the adjusting tube 204e and the sliding sleeve 204f is sealed. A second spring 204g is provided inside the sliding sleeve 204f. When the end of the puncture needle is inserted into the epidural space, the inside of the puncture needle is under negative pressure. The elastic force of the second spring 204g is very small. The catheter 204b, the connecting tube 204d, the adjusting tube 204e, and the sliding sleeve 204f will form the same negative pressure as the puncture needle, thereby causing the sliding sleeve 204f to compress the second spring 204g with very small elastic force.

[0042] Specifically, the adjustment assembly 200 also includes a positioning component 205 disposed on one side of the limiting shell 203a, including a positioning shell 205a fixed to one side of the limiting shell 203a. A slider 205b slides inside the positioning shell 205a. Through the positioning of the positioning shell 205a, the slider 205b can move stably up and down. A third spring 205c is disposed inside the slider 205b. The third spring 205c is currently in a compressed state. A positioning groove 205b-1 is formed on the surface of the slider 205b. An insert block 204h is fixed to the end of the sliding sleeve 204f. The insert block 204h is inserted into the positioning groove 205b-1 to limit the slider 205b. When the sliding sleeve 204f compresses the second spring 204g with very small elastic force, the insert block 204h can move out of the positioning groove 205b-1, thereby releasing the limit on the slider 205b. Under the push of the third spring 205c, the slider 205b moves towards the rack 203b. A limit block 205d is fixed on one side of the slider 205b, so that the limit block 205d limits the rack 203b, thus preventing the rack 203b from moving. A reset rod 205e is fixed on one side of the slider 205b. When the slider 205b moves, it can drive the reset rod 205e to move, so that the user can easily determine that the end of the puncture needle is located in the epidural space.

[0043] Specifically, the driving component 201 includes a support column 201a fixed to one side of the positioning disk 101. A support shaft 201b is fixed inside the support column 201a. A friction wheel 201c is rotatably connected to the surface of the support shaft 201b. The friction wheel 201c has a large friction force. When the puncture needle is pressed against the surface of the friction wheel 201c, the friction wheel 201c can drive the puncture needle to move, so that the two will not easily slip. A support rod 201d is fixed to one side of the support column 201a. Another support shaft 201b slides on the surface of the support rod 201d. A compression wheel 201e is rotatably connected to the surface of the support shaft 201b. The compression wheel 201e can compress the puncture needle, thereby increasing the friction force between the friction wheel 201c and the puncture needle. When the compression wheel 201e does not compress the puncture needle, the puncture needle can easily pass through the side of the friction wheel 201c without driving the friction wheel 201c.

[0044] Example 2, refer to Figures 2-8 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0045] Specifically, the drive component 201 also includes a slide 201f that slides on the surface of the support rod 201d. The slide 201f is fixed to the surface of the support shaft 201b inside the extrusion wheel 201e, so that the extrusion wheel 201e can move closer to or away from the friction wheel 201c. A threaded column 201g is rotatably connected inside the slide 201f by a thread. A rotating rod 201h is fixed to one end of the threaded column 201g, and a fastening wheel 201i is fixed to the other end of the rotating rod 201h. The rotating rod 201h is rotatably connected inside the support shell 102 and will not move within the support shell 102. Rotating the fastening wheel 201i in this way can cause the rotating rod 201h to drive the threaded column 201g to rotate, thereby driving the slide 201f to move, so that the extrusion wheel 201e can move closer to or away from the friction wheel 201c.

[0046] Specifically, the transmission component 202 includes a worm gear 202a fixed to one side of the friction wheel 201c, a worm 202b provided on one side of the worm gear 202a, the worm gear 202a and the worm 202b meshing, a support seat 202c fixed to one side of the positioning disk 101, a rotating column 202d rotatably connected inside the support seat 202c, the worm 202b fixed to the surface of the rotating column 202d, so that the worm 202b can rotate stably, the rotation of the worm 202b can drive the worm gear 202a to rotate, thereby causing the worm gear 202a to drive the friction wheel 201c to rotate, thereby driving the puncture needle to move.

[0047] Specifically, the transmission component 202 also includes a reversing disk 202e fixed to the end of the rotating column 202d. A rotating gear 202f is rotatably connected to the surface of the reversing disk 202e. The rotating gear 202f meshes with the rack 203b. A rotatably connected retaining plate is provided inside the reversing disk 202e, and a compression spring is provided on one side of the retaining plate. Multiple slots are formed on the inner wall of the rotating gear 202f. Under the elastic force of the compression spring, the retaining plate can be engaged in the slots of the rotating gear 202f, thus... When the rack 203b moves toward the first spring 203c, it can drive the reversing disk 202e to rotate through the rotating gear 202f. However, when the rack 203b moves to its reset position, the slot of the rotating gear 202f will slide across the surface of the plate, thus preventing the reversing disk 202e from rotating. The plate, the compression spring, and the slot of the rotating gear 202f form a ratchet structure, which allows the rotating gear 202f to drive the reversing disk 202e to rotate in only one direction.

[0048] Specifically, a drive rod 203h is fixed to one side of the rack 203b, and a positioning strip 203i is fixed to one side of the support shell 102. The top of the support shell 102 is provided with a scale for judging the position of the drive rod 203h. When the drive rod 203h moves from different scales to the side of the positioning strip 203i, it can drive the friction wheel 201c to rotate at different angles.

[0049] Example 3, referring to Figures 1-8 This is the third embodiment of the present invention, which is based on the first two embodiments. This embodiment provides a method for using a lumbar puncture assistive mechanism, including the lumbar puncture assistive mechanism.

[0050] When using it, first disinfect the area around the waist, determine the puncture point, and mark it with a sterile marker. Fix the positioning disc 101 to the patient's waist with medical glue, and make the through hole of the positioning disc 101 located at the position marked by the sterile marker. Insert the installation plug 204c into the tail of the puncture needle.

[0051] Then insert the puncture needle through the support shell 102 and the positioning plate 101 into the patient's body until it reaches the side of the ligamentum flavum. At this time, the user will clearly feel the resistance brought by the ligamentum flavum to the puncture needle. At this time, stop inserting the puncture needle.

[0052] At this time, rotate the fastening wheel 201i so that the friction wheel 201c and the compression wheel 201e clamp the puncture needle. Then, press the positioning bar 203i with your right thumb and repeatedly pull the drive rod 203h to the side of the positioning bar 203i with your index finger. During this process, the drive rod 203h can drive the rack 203b to move, so that the rack 203b drives the rotating gear 202f to rotate, thereby causing the reversing plate 202e to drive the worm 202b and the worm wheel 202a to rotate, thereby driving the friction wheel 201c to rotate, so that the puncture needle is intermittently fed. Under normal circumstances, the thickness of the ligamentum flavum at the L4-L5 position is generally 2-4 mm. Set the feeding distance of each feeding to 1 mm to prevent the puncture needle from being fed too far.

[0053] As the puncture needle moves, its tip penetrates the ligamentum flavum and enters the epidural space. At this point, the negative pressure in the epidural space creates a negative pressure state inside the puncture needle. The second spring 204g has very little elasticity, and the catheter 204b, connecting tube 204d, adjusting tube 204e, and sliding sleeve 204f will form the same negative pressure as the puncture needle. This causes the sliding sleeve 204f to compress the second spring 204g, which has very little elasticity. When the second spring 204g is compressed, the insertion block 204h can move out of the positioning groove 205b-1, thereby releasing the restriction on the slider 205b. Driven by the three springs 205c, the slider 205b moves toward the rack 203b. A limit block 205d is fixed on one side of the slider 205b, which limits the rack 203b, preventing it from moving. A reset rod 205e is fixed on one side of the slider 205b. When the slider 205b moves, the reset rod 205e can move as well. This helps the user determine that the end of the puncture needle is located in the epidural space, while preventing the rack 203b from moving and preventing the puncture needle from puncturing further.

[0054] When the reset rod 205e moves, the drive of the drive rod 203h stops, and the installation plug 204c is pulled out, so that the conduit 204b, connecting tube 204d, adjusting tube 204e and sliding sleeve 204f are in normal air pressure. The reset rod 205e is then reset. At this time, the second spring 204g pushes the insert 204h to be reinserted into the positioning groove 205b-1. Then, the knob 203f is turned to adjust the drive rod 203h to an appropriate scale, thereby adjusting the depth of the puncture needle driven by the friction wheel 201c in a single stroke of the rack 203b. The distance between the ligamentum flavum and the subarachnoid space is usually between 2 and 5 mm. The scale can be adjusted to 0.5 mm to prevent the puncture needle from being inserted too deeply.

[0055] Press the positioning bar 203i with your right thumb and repeatedly pull the drive lever 203h with your index finger to continuously advance the puncture needle until cerebrospinal fluid flows out from the tail of the puncture needle. At this time, the tip of the puncture needle is located in the subarachnoid space, thus completing the insertion operation of the puncture needle.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A lumbar puncture auxiliary mechanism, characterized in that: include, The main component (100) includes a positioning disk (101), a support shell (102) fixed to one side of the positioning disk (101), and a puncture needle penetrating the positioning disk (101) and the support shell (102). An adjustment component (200) is disposed within the support shell (102) and includes a drive component (201) disposed on one side of the positioning disk (101), a transmission component (202) disposed on one side of the drive component (201), and an adjustment component (203) disposed on one side of the transmission component (202). The adjustment component (203) includes a limiting shell (203a) fixed to the inner wall of the support shell (102), a rack (203b) sliding within the limiting shell (203a), a first spring (203c) fixed to the end of the rack (203b), a positioning block (203d) fixed to one side of the rack (203b), a threaded rod (203e) rotatably connected within the limiting shell (203a), a knob (203f) fixed to the end of the threaded rod (203e), and a stop block (203g) rotatably connected to the surface of the threaded rod (203e) via a thread. The adjustment assembly (200) also includes a detection element (204) disposed on one side of the adjustment member (203), including a connecting sleeve (204a) fixed to the surface of the support shell (102), a conduit (204b) inserted into the connecting sleeve (204a), and an installation plug (204c) fixed to the other end of the conduit (204b). The detection component (204) further includes a connecting tube (204d) inserted into the connecting sleeve (204a), an adjusting tube (204e) fixed on the surface of the connecting tube (204d), a sliding sleeve (204f) sliding inside the adjusting tube (204e), and a second spring (204g) provided inside the sliding sleeve (204f). The adjustment assembly (200) further includes a positioning component (205) disposed on one side of the limiting shell (203a), including a positioning shell (205a) fixed to one side of the limiting shell (203a), a slider (205b) sliding inside the positioning shell (205a), a third spring (205c) disposed inside the slider (205b), a positioning groove (205b-1) opened on the surface of the slider (205b), an insert (204h) fixed at the end of the sliding sleeve (204f), a limiting block (205d) fixed on one side of the slider (205b), and a reset rod (205e) fixed on one side of the slider (205b).

2. The lumbar puncture auxiliary mechanism as described in claim 1, characterized in that: The driving component (201) includes a support column (201a) fixed to one side of the positioning disk (101), a support shaft (201b) fixed inside the support column (201a), a friction wheel (201c) rotatably connected to the surface of the support shaft (201b), a support rod (201d) fixed to one side of the support column (201a), another support shaft (201b) sliding on the surface of the support rod (201d), and a pressing wheel (201e) rotatably connected to the surface of the support shaft (201b).

3. The lumbar puncture auxiliary mechanism as described in claim 2, characterized in that: The drive unit (201) further includes a slide (201f) that slides on the surface of the support rod (201d). A threaded column (201g) is rotatably connected to the slide (201f) by a thread. A rotating rod (201h) is fixed at one end of the threaded column (201g), and a fastening wheel (201i) is fixed at the other end of the rotating rod (201h).

4. The lumbar puncture auxiliary mechanism as described in claim 3, characterized in that: The transmission component (202) includes a worm gear (202a) fixed to one side of the friction wheel (201c), a worm (202b) provided on one side of the worm gear (202a), a support seat (202c) fixed on one side of the positioning disk (101), a rotating column (202d) rotatably connected inside the support seat (202c), and the worm (202b) fixed to the surface of the rotating column (202d).

5. The lumbar puncture auxiliary mechanism as described in claim 4, characterized in that: The transmission component (202) further includes a reversing disk (202e) fixed to the end of the rotating column (202d), and a rotating gear (202f) is rotatably connected to the surface of the reversing disk (202e), the rotating gear (202f) meshing with the rack (203b).

6. The lumbar puncture auxiliary mechanism as described in claim 5, characterized in that: A drive rod (203h) is fixed to one side of the rack (203b), and a positioning strip (203i) is fixed to one side of the support shell (102).

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